Guido van Rossum | 6aafbd4 | 2016-04-17 17:52:05 -0700 | [diff] [blame] | 1 | import contextlib |
Guido van Rossum | 1cea70f | 2016-05-18 08:35:00 -0700 | [diff] [blame] | 2 | import collections |
Guido van Rossum | bb7c57c | 2015-11-18 21:12:58 -0800 | [diff] [blame] | 3 | import pickle |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 4 | import re |
| 5 | import sys |
Ćukasz Langa | f350a26 | 2017-09-14 14:33:00 -0400 | [diff] [blame] | 6 | from unittest import TestCase, main, skipUnless, SkipTest, expectedFailure |
Guido van Rossum | b7dedc8 | 2016-10-29 12:44:29 -0700 | [diff] [blame] | 7 | from copy import copy, deepcopy |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 8 | |
Ivan Levkivskyi | f06e021 | 2017-05-02 19:14:07 +0200 | [diff] [blame] | 9 | from typing import Any, NoReturn |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 10 | from typing import TypeVar, AnyStr |
| 11 | from typing import T, KT, VT # Not in __all__. |
| 12 | from typing import Union, Optional |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 13 | from typing import Tuple, List, MutableMapping |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 14 | from typing import Callable |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 15 | from typing import Generic, ClassVar |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 16 | from typing import cast |
| 17 | from typing import get_type_hints |
| 18 | from typing import no_type_check, no_type_check_decorator |
Guido van Rossum | eb9aca3 | 2016-05-24 16:38:22 -0700 | [diff] [blame] | 19 | from typing import Type |
Guido van Rossum | 91185fe | 2016-06-08 11:19:11 -0700 | [diff] [blame] | 20 | from typing import NewType |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 21 | from typing import NamedTuple |
| 22 | from typing import IO, TextIO, BinaryIO |
| 23 | from typing import Pattern, Match |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 24 | import abc |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 25 | import typing |
Guido van Rossum | 83ec302 | 2017-01-17 20:43:28 -0800 | [diff] [blame] | 26 | import weakref |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 27 | |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 28 | from test import mod_generics_cache |
Ivan Levkivskyi | 29bc193 | 2017-12-05 03:43:58 +0100 | [diff] [blame] | 29 | |
| 30 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 31 | class BaseTestCase(TestCase): |
| 32 | |
| 33 | def assertIsSubclass(self, cls, class_or_tuple, msg=None): |
| 34 | if not issubclass(cls, class_or_tuple): |
| 35 | message = '%r is not a subclass of %r' % (cls, class_or_tuple) |
| 36 | if msg is not None: |
| 37 | message += ' : %s' % msg |
| 38 | raise self.failureException(message) |
| 39 | |
| 40 | def assertNotIsSubclass(self, cls, class_or_tuple, msg=None): |
| 41 | if issubclass(cls, class_or_tuple): |
| 42 | message = '%r is a subclass of %r' % (cls, class_or_tuple) |
| 43 | if msg is not None: |
| 44 | message += ' : %s' % msg |
| 45 | raise self.failureException(message) |
| 46 | |
Guido van Rossum | ca4b252 | 2016-11-19 10:32:41 -0800 | [diff] [blame] | 47 | def clear_caches(self): |
| 48 | for f in typing._cleanups: |
| 49 | f() |
| 50 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 51 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 52 | class Employee: |
| 53 | pass |
| 54 | |
| 55 | |
| 56 | class Manager(Employee): |
| 57 | pass |
| 58 | |
| 59 | |
| 60 | class Founder(Employee): |
| 61 | pass |
| 62 | |
| 63 | |
| 64 | class ManagingFounder(Manager, Founder): |
| 65 | pass |
| 66 | |
| 67 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 68 | class AnyTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 69 | |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 70 | def test_any_instance_type_error(self): |
| 71 | with self.assertRaises(TypeError): |
| 72 | isinstance(42, Any) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 73 | |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 74 | def test_any_subclass_type_error(self): |
| 75 | with self.assertRaises(TypeError): |
| 76 | issubclass(Employee, Any) |
| 77 | with self.assertRaises(TypeError): |
| 78 | issubclass(Any, Employee) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 79 | |
| 80 | def test_repr(self): |
| 81 | self.assertEqual(repr(Any), 'typing.Any') |
| 82 | |
| 83 | def test_errors(self): |
| 84 | with self.assertRaises(TypeError): |
| 85 | issubclass(42, Any) |
| 86 | with self.assertRaises(TypeError): |
| 87 | Any[int] # Any is not a generic type. |
| 88 | |
| 89 | def test_cannot_subclass(self): |
| 90 | with self.assertRaises(TypeError): |
| 91 | class A(Any): |
| 92 | pass |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 93 | with self.assertRaises(TypeError): |
| 94 | class A(type(Any)): |
| 95 | pass |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 96 | |
| 97 | def test_cannot_instantiate(self): |
| 98 | with self.assertRaises(TypeError): |
| 99 | Any() |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 100 | with self.assertRaises(TypeError): |
| 101 | type(Any)() |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 102 | |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 103 | def test_any_works_with_alias(self): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 104 | # These expressions must simply not fail. |
| 105 | typing.Match[Any] |
| 106 | typing.Pattern[Any] |
| 107 | typing.IO[Any] |
| 108 | |
| 109 | |
Ivan Levkivskyi | f06e021 | 2017-05-02 19:14:07 +0200 | [diff] [blame] | 110 | class NoReturnTests(BaseTestCase): |
| 111 | |
| 112 | def test_noreturn_instance_type_error(self): |
| 113 | with self.assertRaises(TypeError): |
| 114 | isinstance(42, NoReturn) |
| 115 | |
| 116 | def test_noreturn_subclass_type_error(self): |
| 117 | with self.assertRaises(TypeError): |
| 118 | issubclass(Employee, NoReturn) |
| 119 | with self.assertRaises(TypeError): |
| 120 | issubclass(NoReturn, Employee) |
| 121 | |
| 122 | def test_repr(self): |
| 123 | self.assertEqual(repr(NoReturn), 'typing.NoReturn') |
| 124 | |
| 125 | def test_not_generic(self): |
| 126 | with self.assertRaises(TypeError): |
| 127 | NoReturn[int] |
| 128 | |
| 129 | def test_cannot_subclass(self): |
| 130 | with self.assertRaises(TypeError): |
| 131 | class A(NoReturn): |
| 132 | pass |
| 133 | with self.assertRaises(TypeError): |
| 134 | class A(type(NoReturn)): |
| 135 | pass |
| 136 | |
| 137 | def test_cannot_instantiate(self): |
| 138 | with self.assertRaises(TypeError): |
| 139 | NoReturn() |
| 140 | with self.assertRaises(TypeError): |
| 141 | type(NoReturn)() |
| 142 | |
| 143 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 144 | class TypeVarTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 145 | |
| 146 | def test_basic_plain(self): |
| 147 | T = TypeVar('T') |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 148 | # T equals itself. |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 149 | self.assertEqual(T, T) |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 150 | # T is an instance of TypeVar |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 151 | self.assertIsInstance(T, TypeVar) |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 152 | |
| 153 | def test_typevar_instance_type_error(self): |
| 154 | T = TypeVar('T') |
| 155 | with self.assertRaises(TypeError): |
| 156 | isinstance(42, T) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 157 | |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 158 | def test_typevar_subclass_type_error(self): |
| 159 | T = TypeVar('T') |
| 160 | with self.assertRaises(TypeError): |
| 161 | issubclass(int, T) |
| 162 | with self.assertRaises(TypeError): |
| 163 | issubclass(T, int) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 164 | |
| 165 | def test_constrained_error(self): |
| 166 | with self.assertRaises(TypeError): |
| 167 | X = TypeVar('X', int) |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 168 | X |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 169 | |
| 170 | def test_union_unique(self): |
| 171 | X = TypeVar('X') |
| 172 | Y = TypeVar('Y') |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 173 | self.assertNotEqual(X, Y) |
| 174 | self.assertEqual(Union[X], X) |
| 175 | self.assertNotEqual(Union[X], Union[X, Y]) |
| 176 | self.assertEqual(Union[X, X], X) |
| 177 | self.assertNotEqual(Union[X, int], Union[X]) |
| 178 | self.assertNotEqual(Union[X, int], Union[int]) |
Guido van Rossum | 5fc25a8 | 2016-10-29 08:54:56 -0700 | [diff] [blame] | 179 | self.assertEqual(Union[X, int].__args__, (X, int)) |
| 180 | self.assertEqual(Union[X, int].__parameters__, (X,)) |
| 181 | self.assertIs(Union[X, int].__origin__, Union) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 182 | |
| 183 | def test_union_constrained(self): |
| 184 | A = TypeVar('A', str, bytes) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 185 | self.assertNotEqual(Union[A, str], Union[A]) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 186 | |
| 187 | def test_repr(self): |
| 188 | self.assertEqual(repr(T), '~T') |
| 189 | self.assertEqual(repr(KT), '~KT') |
| 190 | self.assertEqual(repr(VT), '~VT') |
| 191 | self.assertEqual(repr(AnyStr), '~AnyStr') |
| 192 | T_co = TypeVar('T_co', covariant=True) |
| 193 | self.assertEqual(repr(T_co), '+T_co') |
| 194 | T_contra = TypeVar('T_contra', contravariant=True) |
| 195 | self.assertEqual(repr(T_contra), '-T_contra') |
| 196 | |
| 197 | def test_no_redefinition(self): |
| 198 | self.assertNotEqual(TypeVar('T'), TypeVar('T')) |
| 199 | self.assertNotEqual(TypeVar('T', int, str), TypeVar('T', int, str)) |
| 200 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 201 | def test_cannot_subclass_vars(self): |
| 202 | with self.assertRaises(TypeError): |
| 203 | class V(TypeVar('T')): |
| 204 | pass |
| 205 | |
| 206 | def test_cannot_subclass_var_itself(self): |
| 207 | with self.assertRaises(TypeError): |
| 208 | class V(TypeVar): |
| 209 | pass |
| 210 | |
| 211 | def test_cannot_instantiate_vars(self): |
| 212 | with self.assertRaises(TypeError): |
| 213 | TypeVar('A')() |
| 214 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 215 | def test_bound_errors(self): |
| 216 | with self.assertRaises(TypeError): |
| 217 | TypeVar('X', bound=42) |
| 218 | with self.assertRaises(TypeError): |
| 219 | TypeVar('X', str, float, bound=Employee) |
| 220 | |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 221 | def test_no_bivariant(self): |
| 222 | with self.assertRaises(ValueError): |
| 223 | TypeVar('T', covariant=True, contravariant=True) |
| 224 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 225 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 226 | class UnionTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 227 | |
| 228 | def test_basics(self): |
| 229 | u = Union[int, float] |
| 230 | self.assertNotEqual(u, Union) |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 231 | |
| 232 | def test_subclass_error(self): |
| 233 | with self.assertRaises(TypeError): |
| 234 | issubclass(int, Union) |
| 235 | with self.assertRaises(TypeError): |
| 236 | issubclass(Union, int) |
| 237 | with self.assertRaises(TypeError): |
| 238 | issubclass(int, Union[int, str]) |
| 239 | with self.assertRaises(TypeError): |
| 240 | issubclass(Union[int, str], int) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 241 | |
| 242 | def test_union_any(self): |
| 243 | u = Union[Any] |
| 244 | self.assertEqual(u, Any) |
Guido van Rossum | b47c9d2 | 2016-10-03 08:40:50 -0700 | [diff] [blame] | 245 | u1 = Union[int, Any] |
| 246 | u2 = Union[Any, int] |
| 247 | u3 = Union[Any, object] |
| 248 | self.assertEqual(u1, u2) |
| 249 | self.assertNotEqual(u1, Any) |
| 250 | self.assertNotEqual(u2, Any) |
| 251 | self.assertNotEqual(u3, Any) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 252 | |
| 253 | def test_union_object(self): |
| 254 | u = Union[object] |
| 255 | self.assertEqual(u, object) |
Ivan Levkivskyi | f65e31f | 2018-05-18 16:00:38 -0700 | [diff] [blame] | 256 | u1 = Union[int, object] |
| 257 | u2 = Union[object, int] |
| 258 | self.assertEqual(u1, u2) |
| 259 | self.assertNotEqual(u1, object) |
| 260 | self.assertNotEqual(u2, object) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 261 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 262 | def test_unordered(self): |
| 263 | u1 = Union[int, float] |
| 264 | u2 = Union[float, int] |
| 265 | self.assertEqual(u1, u2) |
| 266 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 267 | def test_single_class_disappears(self): |
| 268 | t = Union[Employee] |
| 269 | self.assertIs(t, Employee) |
| 270 | |
Ivan Levkivskyi | f65e31f | 2018-05-18 16:00:38 -0700 | [diff] [blame] | 271 | def test_base_class_kept(self): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 272 | u = Union[Employee, Manager] |
Ivan Levkivskyi | f65e31f | 2018-05-18 16:00:38 -0700 | [diff] [blame] | 273 | self.assertNotEqual(u, Employee) |
| 274 | self.assertIn(Employee, u.__args__) |
| 275 | self.assertIn(Manager, u.__args__) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 276 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 277 | def test_union_union(self): |
| 278 | u = Union[int, float] |
| 279 | v = Union[u, Employee] |
| 280 | self.assertEqual(v, Union[int, float, Employee]) |
| 281 | |
| 282 | def test_repr(self): |
| 283 | self.assertEqual(repr(Union), 'typing.Union') |
| 284 | u = Union[Employee, int] |
| 285 | self.assertEqual(repr(u), 'typing.Union[%s.Employee, int]' % __name__) |
| 286 | u = Union[int, Employee] |
| 287 | self.assertEqual(repr(u), 'typing.Union[int, %s.Employee]' % __name__) |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 288 | T = TypeVar('T') |
| 289 | u = Union[T, int][int] |
| 290 | self.assertEqual(repr(u), repr(int)) |
| 291 | u = Union[List[int], int] |
| 292 | self.assertEqual(repr(u), 'typing.Union[typing.List[int], int]') |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 293 | |
| 294 | def test_cannot_subclass(self): |
| 295 | with self.assertRaises(TypeError): |
| 296 | class C(Union): |
| 297 | pass |
| 298 | with self.assertRaises(TypeError): |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 299 | class C(type(Union)): |
| 300 | pass |
| 301 | with self.assertRaises(TypeError): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 302 | class C(Union[int, str]): |
| 303 | pass |
| 304 | |
| 305 | def test_cannot_instantiate(self): |
| 306 | with self.assertRaises(TypeError): |
| 307 | Union() |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 308 | with self.assertRaises(TypeError): |
| 309 | type(Union)() |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 310 | u = Union[int, float] |
| 311 | with self.assertRaises(TypeError): |
| 312 | u() |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 313 | with self.assertRaises(TypeError): |
| 314 | type(u)() |
| 315 | |
| 316 | def test_union_generalization(self): |
| 317 | self.assertFalse(Union[str, typing.Iterable[int]] == str) |
| 318 | self.assertFalse(Union[str, typing.Iterable[int]] == typing.Iterable[int]) |
Ivan Levkivskyi | f65e31f | 2018-05-18 16:00:38 -0700 | [diff] [blame] | 319 | self.assertIn(str, Union[str, typing.Iterable[int]].__args__) |
| 320 | self.assertIn(typing.Iterable[int], Union[str, typing.Iterable[int]].__args__) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 321 | |
Guido van Rossum | 83ec302 | 2017-01-17 20:43:28 -0800 | [diff] [blame] | 322 | def test_union_compare_other(self): |
| 323 | self.assertNotEqual(Union, object) |
| 324 | self.assertNotEqual(Union, Any) |
| 325 | self.assertNotEqual(ClassVar, Union) |
| 326 | self.assertNotEqual(Optional, Union) |
| 327 | self.assertNotEqual([None], Optional) |
| 328 | self.assertNotEqual(Optional, typing.Mapping) |
| 329 | self.assertNotEqual(Optional[typing.MutableMapping], Union) |
| 330 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 331 | def test_optional(self): |
| 332 | o = Optional[int] |
| 333 | u = Union[int, None] |
| 334 | self.assertEqual(o, u) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 335 | |
| 336 | def test_empty(self): |
| 337 | with self.assertRaises(TypeError): |
| 338 | Union[()] |
| 339 | |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 340 | def test_union_instance_type_error(self): |
| 341 | with self.assertRaises(TypeError): |
| 342 | isinstance(42, Union[int, str]) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 343 | |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 344 | def test_no_eval_union(self): |
| 345 | u = Union[int, str] |
| 346 | def f(x: u): ... |
| 347 | self.assertIs(get_type_hints(f)['x'], u) |
| 348 | |
| 349 | def test_function_repr_union(self): |
| 350 | def fun() -> int: ... |
| 351 | self.assertEqual(repr(Union[fun, int]), 'typing.Union[fun, int]') |
| 352 | |
Guido van Rossum | ca636ea | 2015-10-19 14:55:47 -0700 | [diff] [blame] | 353 | def test_union_str_pattern(self): |
| 354 | # Shouldn't crash; see http://bugs.python.org/issue25390 |
| 355 | A = Union[str, Pattern] |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 356 | A |
Guido van Rossum | ca636ea | 2015-10-19 14:55:47 -0700 | [diff] [blame] | 357 | |
Guido van Rossum | 91185fe | 2016-06-08 11:19:11 -0700 | [diff] [blame] | 358 | def test_etree(self): |
| 359 | # See https://github.com/python/typing/issues/229 |
| 360 | # (Only relevant for Python 2.) |
| 361 | try: |
| 362 | from xml.etree.cElementTree import Element |
| 363 | except ImportError: |
| 364 | raise SkipTest("cElementTree not found") |
| 365 | Union[Element, str] # Shouldn't crash |
| 366 | |
| 367 | def Elem(*args): |
| 368 | return Element(*args) |
| 369 | |
| 370 | Union[Elem, str] # Nor should this |
| 371 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 372 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 373 | class TupleTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 374 | |
| 375 | def test_basics(self): |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 376 | with self.assertRaises(TypeError): |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 377 | issubclass(Tuple, Tuple[int, str]) |
| 378 | with self.assertRaises(TypeError): |
| 379 | issubclass(tuple, Tuple[int, str]) |
| 380 | |
| 381 | class TP(tuple): ... |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 382 | self.assertTrue(issubclass(tuple, Tuple)) |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 383 | self.assertTrue(issubclass(TP, Tuple)) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 384 | |
Guido van Rossum | 5abcbb3 | 2016-04-18 07:37:41 -0700 | [diff] [blame] | 385 | def test_equality(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 386 | self.assertEqual(Tuple[int], Tuple[int]) |
| 387 | self.assertEqual(Tuple[int, ...], Tuple[int, ...]) |
| 388 | self.assertNotEqual(Tuple[int], Tuple[int, int]) |
| 389 | self.assertNotEqual(Tuple[int], Tuple[int, ...]) |
Guido van Rossum | 5abcbb3 | 2016-04-18 07:37:41 -0700 | [diff] [blame] | 390 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 391 | def test_tuple_subclass(self): |
| 392 | class MyTuple(tuple): |
| 393 | pass |
| 394 | self.assertTrue(issubclass(MyTuple, Tuple)) |
| 395 | |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 396 | def test_tuple_instance_type_error(self): |
| 397 | with self.assertRaises(TypeError): |
| 398 | isinstance((0, 0), Tuple[int, int]) |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 399 | self.assertIsInstance((0, 0), Tuple) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 400 | |
| 401 | def test_repr(self): |
| 402 | self.assertEqual(repr(Tuple), 'typing.Tuple') |
Guido van Rossum | 91185fe | 2016-06-08 11:19:11 -0700 | [diff] [blame] | 403 | self.assertEqual(repr(Tuple[()]), 'typing.Tuple[()]') |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 404 | self.assertEqual(repr(Tuple[int, float]), 'typing.Tuple[int, float]') |
| 405 | self.assertEqual(repr(Tuple[int, ...]), 'typing.Tuple[int, ...]') |
| 406 | |
| 407 | def test_errors(self): |
| 408 | with self.assertRaises(TypeError): |
| 409 | issubclass(42, Tuple) |
| 410 | with self.assertRaises(TypeError): |
| 411 | issubclass(42, Tuple[int]) |
| 412 | |
| 413 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 414 | class CallableTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 415 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 416 | def test_self_subclass(self): |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 417 | with self.assertRaises(TypeError): |
| 418 | self.assertTrue(issubclass(type(lambda x: x), Callable[[int], int])) |
| 419 | self.assertTrue(issubclass(type(lambda x: x), Callable)) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 420 | |
| 421 | def test_eq_hash(self): |
| 422 | self.assertEqual(Callable[[int], int], Callable[[int], int]) |
| 423 | self.assertEqual(len({Callable[[int], int], Callable[[int], int]}), 1) |
| 424 | self.assertNotEqual(Callable[[int], int], Callable[[int], str]) |
| 425 | self.assertNotEqual(Callable[[int], int], Callable[[str], int]) |
| 426 | self.assertNotEqual(Callable[[int], int], Callable[[int, int], int]) |
| 427 | self.assertNotEqual(Callable[[int], int], Callable[[], int]) |
| 428 | self.assertNotEqual(Callable[[int], int], Callable) |
| 429 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 430 | def test_cannot_instantiate(self): |
| 431 | with self.assertRaises(TypeError): |
| 432 | Callable() |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 433 | with self.assertRaises(TypeError): |
| 434 | type(Callable)() |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 435 | c = Callable[[int], str] |
| 436 | with self.assertRaises(TypeError): |
| 437 | c() |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 438 | with self.assertRaises(TypeError): |
| 439 | type(c)() |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 440 | |
Guido van Rossum | 991d14f | 2016-11-09 13:12:51 -0800 | [diff] [blame] | 441 | def test_callable_wrong_forms(self): |
| 442 | with self.assertRaises(TypeError): |
| 443 | Callable[[...], int] |
| 444 | with self.assertRaises(TypeError): |
| 445 | Callable[(), int] |
| 446 | with self.assertRaises(TypeError): |
| 447 | Callable[[()], int] |
| 448 | with self.assertRaises(TypeError): |
| 449 | Callable[[int, 1], 2] |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 450 | with self.assertRaises(TypeError): |
| 451 | Callable[int] |
Guido van Rossum | 991d14f | 2016-11-09 13:12:51 -0800 | [diff] [blame] | 452 | |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 453 | def test_callable_instance_works(self): |
Guido van Rossum | 1b66910 | 2015-09-04 12:15:54 -0700 | [diff] [blame] | 454 | def f(): |
| 455 | pass |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 456 | self.assertIsInstance(f, Callable) |
| 457 | self.assertNotIsInstance(None, Callable) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 458 | |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 459 | def test_callable_instance_type_error(self): |
Guido van Rossum | 1b66910 | 2015-09-04 12:15:54 -0700 | [diff] [blame] | 460 | def f(): |
| 461 | pass |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 462 | with self.assertRaises(TypeError): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 463 | self.assertIsInstance(f, Callable[[], None]) |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 464 | with self.assertRaises(TypeError): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 465 | self.assertIsInstance(f, Callable[[], Any]) |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 466 | with self.assertRaises(TypeError): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 467 | self.assertNotIsInstance(None, Callable[[], None]) |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 468 | with self.assertRaises(TypeError): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 469 | self.assertNotIsInstance(None, Callable[[], Any]) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 470 | |
| 471 | def test_repr(self): |
| 472 | ct0 = Callable[[], bool] |
| 473 | self.assertEqual(repr(ct0), 'typing.Callable[[], bool]') |
| 474 | ct2 = Callable[[str, float], int] |
| 475 | self.assertEqual(repr(ct2), 'typing.Callable[[str, float], int]') |
| 476 | ctv = Callable[..., str] |
| 477 | self.assertEqual(repr(ctv), 'typing.Callable[..., str]') |
| 478 | |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 479 | def test_callable_with_ellipsis(self): |
| 480 | |
| 481 | def foo(a: Callable[..., T]): |
| 482 | pass |
| 483 | |
| 484 | self.assertEqual(get_type_hints(foo, globals(), locals()), |
| 485 | {'a': Callable[..., T]}) |
| 486 | |
Guido van Rossum | efa798d | 2016-08-23 11:01:50 -0700 | [diff] [blame] | 487 | def test_ellipsis_in_generic(self): |
| 488 | # Shouldn't crash; see https://github.com/python/typing/issues/259 |
| 489 | typing.List[Callable[..., str]] |
| 490 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 491 | |
| 492 | XK = TypeVar('XK', str, bytes) |
| 493 | XV = TypeVar('XV') |
| 494 | |
| 495 | |
| 496 | class SimpleMapping(Generic[XK, XV]): |
| 497 | |
| 498 | def __getitem__(self, key: XK) -> XV: |
| 499 | ... |
| 500 | |
| 501 | def __setitem__(self, key: XK, value: XV): |
| 502 | ... |
| 503 | |
| 504 | def get(self, key: XK, default: XV = None) -> XV: |
| 505 | ... |
| 506 | |
| 507 | |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 508 | class MySimpleMapping(SimpleMapping[XK, XV]): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 509 | |
| 510 | def __init__(self): |
| 511 | self.store = {} |
| 512 | |
| 513 | def __getitem__(self, key: str): |
| 514 | return self.store[key] |
| 515 | |
| 516 | def __setitem__(self, key: str, value): |
| 517 | self.store[key] = value |
| 518 | |
| 519 | def get(self, key: str, default=None): |
| 520 | try: |
| 521 | return self.store[key] |
| 522 | except KeyError: |
| 523 | return default |
| 524 | |
| 525 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 526 | class ProtocolTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 527 | |
| 528 | def test_supports_int(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 529 | self.assertIsSubclass(int, typing.SupportsInt) |
| 530 | self.assertNotIsSubclass(str, typing.SupportsInt) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 531 | |
| 532 | def test_supports_float(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 533 | self.assertIsSubclass(float, typing.SupportsFloat) |
| 534 | self.assertNotIsSubclass(str, typing.SupportsFloat) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 535 | |
| 536 | def test_supports_complex(self): |
| 537 | |
| 538 | # Note: complex itself doesn't have __complex__. |
| 539 | class C: |
| 540 | def __complex__(self): |
| 541 | return 0j |
| 542 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 543 | self.assertIsSubclass(C, typing.SupportsComplex) |
| 544 | self.assertNotIsSubclass(str, typing.SupportsComplex) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 545 | |
| 546 | def test_supports_bytes(self): |
| 547 | |
| 548 | # Note: bytes itself doesn't have __bytes__. |
| 549 | class B: |
| 550 | def __bytes__(self): |
| 551 | return b'' |
| 552 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 553 | self.assertIsSubclass(B, typing.SupportsBytes) |
| 554 | self.assertNotIsSubclass(str, typing.SupportsBytes) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 555 | |
| 556 | def test_supports_abs(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 557 | self.assertIsSubclass(float, typing.SupportsAbs) |
| 558 | self.assertIsSubclass(int, typing.SupportsAbs) |
| 559 | self.assertNotIsSubclass(str, typing.SupportsAbs) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 560 | |
| 561 | def test_supports_round(self): |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 562 | issubclass(float, typing.SupportsRound) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 563 | self.assertIsSubclass(float, typing.SupportsRound) |
| 564 | self.assertIsSubclass(int, typing.SupportsRound) |
| 565 | self.assertNotIsSubclass(str, typing.SupportsRound) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 566 | |
| 567 | def test_reversible(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 568 | self.assertIsSubclass(list, typing.Reversible) |
| 569 | self.assertNotIsSubclass(int, typing.Reversible) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 570 | |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 571 | def test_protocol_instance_type_error(self): |
| 572 | with self.assertRaises(TypeError): |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 573 | isinstance(0, typing.SupportsAbs) |
Guido van Rossum | ca4b252 | 2016-11-19 10:32:41 -0800 | [diff] [blame] | 574 | class C1(typing.SupportsInt): |
| 575 | def __int__(self) -> int: |
| 576 | return 42 |
| 577 | class C2(C1): |
| 578 | pass |
| 579 | c = C2() |
| 580 | self.assertIsInstance(c, C1) |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 581 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 582 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 583 | class GenericTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 584 | |
| 585 | def test_basics(self): |
| 586 | X = SimpleMapping[str, Any] |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 587 | self.assertEqual(X.__parameters__, ()) |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 588 | with self.assertRaises(TypeError): |
| 589 | X[str] |
| 590 | with self.assertRaises(TypeError): |
| 591 | X[str, str] |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 592 | Y = SimpleMapping[XK, str] |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 593 | self.assertEqual(Y.__parameters__, (XK,)) |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 594 | Y[str] |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 595 | with self.assertRaises(TypeError): |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 596 | Y[str, str] |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 597 | SM1 = SimpleMapping[str, int] |
| 598 | with self.assertRaises(TypeError): |
| 599 | issubclass(SM1, SimpleMapping) |
| 600 | self.assertIsInstance(SM1(), SimpleMapping) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 601 | |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 602 | def test_generic_errors(self): |
Guido van Rossum | 62fe1bb | 2016-10-29 16:05:26 -0700 | [diff] [blame] | 603 | T = TypeVar('T') |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 604 | S = TypeVar('S') |
Guido van Rossum | 62fe1bb | 2016-10-29 16:05:26 -0700 | [diff] [blame] | 605 | with self.assertRaises(TypeError): |
| 606 | Generic[T]() |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 607 | with self.assertRaises(TypeError): |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 608 | Generic[T][T] |
| 609 | with self.assertRaises(TypeError): |
| 610 | Generic[T][S] |
| 611 | with self.assertRaises(TypeError): |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 612 | class C(Generic[T], Generic[T]): ... |
| 613 | with self.assertRaises(TypeError): |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 614 | isinstance([], List[int]) |
| 615 | with self.assertRaises(TypeError): |
| 616 | issubclass(list, List[int]) |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 617 | with self.assertRaises(TypeError): |
| 618 | class NewGeneric(Generic): ... |
| 619 | with self.assertRaises(TypeError): |
| 620 | class MyGeneric(Generic[T], Generic[S]): ... |
| 621 | with self.assertRaises(TypeError): |
| 622 | class MyGeneric(List[T], Generic[S]): ... |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 623 | |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 624 | def test_init(self): |
| 625 | T = TypeVar('T') |
| 626 | S = TypeVar('S') |
| 627 | with self.assertRaises(TypeError): |
| 628 | Generic[T, T] |
| 629 | with self.assertRaises(TypeError): |
| 630 | Generic[T, S, T] |
| 631 | |
Ivan Levkivskyi | 29bc193 | 2017-12-05 03:43:58 +0100 | [diff] [blame] | 632 | def test_init_subclass(self): |
| 633 | class X(typing.Generic[T]): |
| 634 | def __init_subclass__(cls, **kwargs): |
| 635 | super().__init_subclass__(**kwargs) |
| 636 | cls.attr = 42 |
| 637 | class Y(X): |
| 638 | pass |
| 639 | self.assertEqual(Y.attr, 42) |
| 640 | with self.assertRaises(AttributeError): |
| 641 | X.attr |
| 642 | X.attr = 1 |
| 643 | Y.attr = 2 |
| 644 | class Z(Y): |
| 645 | pass |
| 646 | class W(X[int]): |
| 647 | pass |
| 648 | self.assertEqual(Y.attr, 2) |
| 649 | self.assertEqual(Z.attr, 42) |
| 650 | self.assertEqual(W.attr, 42) |
| 651 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 652 | def test_repr(self): |
| 653 | self.assertEqual(repr(SimpleMapping), |
Serhiy Storchaka | 9613609 | 2018-07-21 22:46:26 +0300 | [diff] [blame] | 654 | f"<class '{__name__}.SimpleMapping'>") |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 655 | self.assertEqual(repr(MySimpleMapping), |
Serhiy Storchaka | 9613609 | 2018-07-21 22:46:26 +0300 | [diff] [blame] | 656 | f"<class '{__name__}.MySimpleMapping'>") |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 657 | |
| 658 | def test_chain_repr(self): |
| 659 | T = TypeVar('T') |
| 660 | S = TypeVar('S') |
| 661 | |
| 662 | class C(Generic[T]): |
| 663 | pass |
| 664 | |
| 665 | X = C[Tuple[S, T]] |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 666 | self.assertEqual(X, C[Tuple[S, T]]) |
| 667 | self.assertNotEqual(X, C[Tuple[T, S]]) |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 668 | |
| 669 | Y = X[T, int] |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 670 | self.assertEqual(Y, X[T, int]) |
| 671 | self.assertNotEqual(Y, X[S, int]) |
| 672 | self.assertNotEqual(Y, X[T, str]) |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 673 | |
| 674 | Z = Y[str] |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 675 | self.assertEqual(Z, Y[str]) |
| 676 | self.assertNotEqual(Z, Y[int]) |
| 677 | self.assertNotEqual(Z, Y[T]) |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 678 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 679 | self.assertTrue(str(Z).endswith( |
Guido van Rossum | 7ef22d6 | 2016-10-21 14:27:58 -0700 | [diff] [blame] | 680 | '.C[typing.Tuple[str, int]]')) |
| 681 | |
| 682 | def test_new_repr(self): |
| 683 | T = TypeVar('T') |
| 684 | U = TypeVar('U', covariant=True) |
| 685 | S = TypeVar('S') |
| 686 | |
| 687 | self.assertEqual(repr(List), 'typing.List') |
| 688 | self.assertEqual(repr(List[T]), 'typing.List[~T]') |
| 689 | self.assertEqual(repr(List[U]), 'typing.List[+U]') |
| 690 | self.assertEqual(repr(List[S][T][int]), 'typing.List[int]') |
| 691 | self.assertEqual(repr(List[int]), 'typing.List[int]') |
| 692 | |
| 693 | def test_new_repr_complex(self): |
| 694 | T = TypeVar('T') |
| 695 | TS = TypeVar('TS') |
| 696 | |
| 697 | self.assertEqual(repr(typing.Mapping[T, TS][TS, T]), 'typing.Mapping[~TS, ~T]') |
| 698 | self.assertEqual(repr(List[Tuple[T, TS]][int, T]), |
| 699 | 'typing.List[typing.Tuple[int, ~T]]') |
Guido van Rossum | 95919c0 | 2017-01-22 17:47:20 -0800 | [diff] [blame] | 700 | self.assertEqual( |
| 701 | repr(List[Tuple[T, T]][List[int]]), |
| 702 | 'typing.List[typing.Tuple[typing.List[int], typing.List[int]]]' |
| 703 | ) |
Guido van Rossum | 7ef22d6 | 2016-10-21 14:27:58 -0700 | [diff] [blame] | 704 | |
| 705 | def test_new_repr_bare(self): |
| 706 | T = TypeVar('T') |
| 707 | self.assertEqual(repr(Generic[T]), 'typing.Generic[~T]') |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 708 | self.assertEqual(repr(typing._Protocol[T]), 'typing._Protocol[~T]') |
Guido van Rossum | 7ef22d6 | 2016-10-21 14:27:58 -0700 | [diff] [blame] | 709 | class C(typing.Dict[Any, Any]): ... |
| 710 | # this line should just work |
| 711 | repr(C.__mro__) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 712 | |
Guido van Rossum | bb7c57c | 2015-11-18 21:12:58 -0800 | [diff] [blame] | 713 | def test_dict(self): |
| 714 | T = TypeVar('T') |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 715 | |
Guido van Rossum | bb7c57c | 2015-11-18 21:12:58 -0800 | [diff] [blame] | 716 | class B(Generic[T]): |
| 717 | pass |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 718 | |
Guido van Rossum | bb7c57c | 2015-11-18 21:12:58 -0800 | [diff] [blame] | 719 | b = B() |
| 720 | b.foo = 42 |
| 721 | self.assertEqual(b.__dict__, {'foo': 42}) |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 722 | |
Guido van Rossum | bb7c57c | 2015-11-18 21:12:58 -0800 | [diff] [blame] | 723 | class C(B[int]): |
| 724 | pass |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 725 | |
Guido van Rossum | bb7c57c | 2015-11-18 21:12:58 -0800 | [diff] [blame] | 726 | c = C() |
| 727 | c.bar = 'abc' |
| 728 | self.assertEqual(c.__dict__, {'bar': 'abc'}) |
| 729 | |
Ivan Levkivskyi | abb3b8a | 2017-02-24 04:03:28 +0100 | [diff] [blame] | 730 | def test_subscripted_generics_as_proxies(self): |
| 731 | T = TypeVar('T') |
| 732 | class C(Generic[T]): |
| 733 | x = 'def' |
| 734 | self.assertEqual(C[int].x, 'def') |
| 735 | self.assertEqual(C[C[int]].x, 'def') |
| 736 | C[C[int]].x = 'changed' |
| 737 | self.assertEqual(C.x, 'changed') |
| 738 | self.assertEqual(C[str].x, 'changed') |
| 739 | C[List[str]].z = 'new' |
| 740 | self.assertEqual(C.z, 'new') |
| 741 | self.assertEqual(C[Tuple[int]].z, 'new') |
| 742 | |
| 743 | self.assertEqual(C().x, 'changed') |
| 744 | self.assertEqual(C[Tuple[str]]().z, 'new') |
| 745 | |
| 746 | class D(C[T]): |
| 747 | pass |
| 748 | self.assertEqual(D[int].x, 'changed') |
| 749 | self.assertEqual(D.z, 'new') |
| 750 | D.z = 'from derived z' |
| 751 | D[int].x = 'from derived x' |
| 752 | self.assertEqual(C.x, 'changed') |
| 753 | self.assertEqual(C[int].z, 'new') |
| 754 | self.assertEqual(D.x, 'from derived x') |
| 755 | self.assertEqual(D[str].z, 'from derived z') |
| 756 | |
Ivan Levkivskyi | 365cb5b | 2017-02-24 18:28:26 +0100 | [diff] [blame] | 757 | def test_abc_registry_kept(self): |
| 758 | T = TypeVar('T') |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 759 | class C(collections.abc.Mapping, Generic[T]): ... |
Ivan Levkivskyi | 365cb5b | 2017-02-24 18:28:26 +0100 | [diff] [blame] | 760 | C.register(int) |
| 761 | self.assertIsInstance(1, C) |
| 762 | C[int] |
| 763 | self.assertIsInstance(1, C) |
Ivan Levkivskyi | 03e3c34 | 2018-02-18 12:41:58 +0000 | [diff] [blame] | 764 | C._abc_registry_clear() |
| 765 | C._abc_caches_clear() # To keep refleak hunting mode clean |
Ivan Levkivskyi | 365cb5b | 2017-02-24 18:28:26 +0100 | [diff] [blame] | 766 | |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 767 | def test_false_subclasses(self): |
| 768 | class MyMapping(MutableMapping[str, str]): pass |
| 769 | self.assertNotIsInstance({}, MyMapping) |
| 770 | self.assertNotIsSubclass(dict, MyMapping) |
| 771 | |
Guido van Rossum | b47c9d2 | 2016-10-03 08:40:50 -0700 | [diff] [blame] | 772 | def test_abc_bases(self): |
| 773 | class MM(MutableMapping[str, str]): |
| 774 | def __getitem__(self, k): |
| 775 | return None |
| 776 | def __setitem__(self, k, v): |
| 777 | pass |
| 778 | def __delitem__(self, k): |
| 779 | pass |
| 780 | def __iter__(self): |
| 781 | return iter(()) |
| 782 | def __len__(self): |
| 783 | return 0 |
| 784 | # this should just work |
| 785 | MM().update() |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 786 | self.assertIsInstance(MM(), collections.abc.MutableMapping) |
Guido van Rossum | b47c9d2 | 2016-10-03 08:40:50 -0700 | [diff] [blame] | 787 | self.assertIsInstance(MM(), MutableMapping) |
| 788 | self.assertNotIsInstance(MM(), List) |
| 789 | self.assertNotIsInstance({}, MM) |
| 790 | |
| 791 | def test_multiple_bases(self): |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 792 | class MM1(MutableMapping[str, str], collections.abc.MutableMapping): |
Guido van Rossum | b47c9d2 | 2016-10-03 08:40:50 -0700 | [diff] [blame] | 793 | pass |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 794 | class MM2(collections.abc.MutableMapping, MutableMapping[str, str]): |
| 795 | pass |
| 796 | self.assertEqual(MM2.__bases__, (collections.abc.MutableMapping, Generic)) |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 797 | |
Guido van Rossum | 7ef22d6 | 2016-10-21 14:27:58 -0700 | [diff] [blame] | 798 | def test_orig_bases(self): |
| 799 | T = TypeVar('T') |
| 800 | class C(typing.Dict[str, T]): ... |
| 801 | self.assertEqual(C.__orig_bases__, (typing.Dict[str, T],)) |
| 802 | |
| 803 | def test_naive_runtime_checks(self): |
| 804 | def naive_dict_check(obj, tp): |
| 805 | # Check if a dictionary conforms to Dict type |
| 806 | if len(tp.__parameters__) > 0: |
| 807 | raise NotImplementedError |
| 808 | if tp.__args__: |
| 809 | KT, VT = tp.__args__ |
Guido van Rossum | 95919c0 | 2017-01-22 17:47:20 -0800 | [diff] [blame] | 810 | return all( |
| 811 | isinstance(k, KT) and isinstance(v, VT) |
| 812 | for k, v in obj.items() |
| 813 | ) |
Guido van Rossum | 7ef22d6 | 2016-10-21 14:27:58 -0700 | [diff] [blame] | 814 | self.assertTrue(naive_dict_check({'x': 1}, typing.Dict[str, int])) |
| 815 | self.assertFalse(naive_dict_check({1: 'x'}, typing.Dict[str, int])) |
| 816 | with self.assertRaises(NotImplementedError): |
| 817 | naive_dict_check({1: 'x'}, typing.Dict[str, T]) |
| 818 | |
| 819 | def naive_generic_check(obj, tp): |
| 820 | # Check if an instance conforms to the generic class |
| 821 | if not hasattr(obj, '__orig_class__'): |
| 822 | raise NotImplementedError |
| 823 | return obj.__orig_class__ == tp |
| 824 | class Node(Generic[T]): ... |
| 825 | self.assertTrue(naive_generic_check(Node[int](), Node[int])) |
| 826 | self.assertFalse(naive_generic_check(Node[str](), Node[int])) |
| 827 | self.assertFalse(naive_generic_check(Node[str](), List)) |
| 828 | with self.assertRaises(NotImplementedError): |
Guido van Rossum | d7adfe1 | 2017-01-22 17:43:53 -0800 | [diff] [blame] | 829 | naive_generic_check([1, 2, 3], Node[int]) |
Guido van Rossum | 7ef22d6 | 2016-10-21 14:27:58 -0700 | [diff] [blame] | 830 | |
| 831 | def naive_list_base_check(obj, tp): |
| 832 | # Check if list conforms to a List subclass |
| 833 | return all(isinstance(x, tp.__orig_bases__[0].__args__[0]) |
| 834 | for x in obj) |
| 835 | class C(List[int]): ... |
| 836 | self.assertTrue(naive_list_base_check([1, 2, 3], C)) |
| 837 | self.assertFalse(naive_list_base_check(['a', 'b'], C)) |
| 838 | |
| 839 | def test_multi_subscr_base(self): |
| 840 | T = TypeVar('T') |
| 841 | U = TypeVar('U') |
| 842 | V = TypeVar('V') |
| 843 | class C(List[T][U][V]): ... |
| 844 | class D(C, List[T][U][V]): ... |
| 845 | self.assertEqual(C.__parameters__, (V,)) |
| 846 | self.assertEqual(D.__parameters__, (V,)) |
| 847 | self.assertEqual(C[int].__parameters__, ()) |
| 848 | self.assertEqual(D[int].__parameters__, ()) |
| 849 | self.assertEqual(C[int].__args__, (int,)) |
| 850 | self.assertEqual(D[int].__args__, (int,)) |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 851 | self.assertEqual(C.__bases__, (list, Generic)) |
| 852 | self.assertEqual(D.__bases__, (C, list, Generic)) |
Guido van Rossum | 7ef22d6 | 2016-10-21 14:27:58 -0700 | [diff] [blame] | 853 | self.assertEqual(C.__orig_bases__, (List[T][U][V],)) |
| 854 | self.assertEqual(D.__orig_bases__, (C, List[T][U][V])) |
| 855 | |
Guido van Rossum | 83ec302 | 2017-01-17 20:43:28 -0800 | [diff] [blame] | 856 | def test_subscript_meta(self): |
| 857 | T = TypeVar('T') |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 858 | class Meta(type): ... |
| 859 | self.assertEqual(Type[Meta], Type[Meta]) |
| 860 | self.assertEqual(Union[T, int][Meta], Union[Meta, int]) |
| 861 | self.assertEqual(Callable[..., Meta].__args__, (Ellipsis, Meta)) |
Guido van Rossum | 83ec302 | 2017-01-17 20:43:28 -0800 | [diff] [blame] | 862 | |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 863 | def test_generic_hashes(self): |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 864 | class A(Generic[T]): |
| 865 | ... |
| 866 | |
| 867 | class B(Generic[T]): |
| 868 | class A(Generic[T]): |
| 869 | ... |
| 870 | |
| 871 | self.assertEqual(A, A) |
| 872 | self.assertEqual(mod_generics_cache.A[str], mod_generics_cache.A[str]) |
| 873 | self.assertEqual(B.A, B.A) |
| 874 | self.assertEqual(mod_generics_cache.B.A[B.A[str]], |
| 875 | mod_generics_cache.B.A[B.A[str]]) |
| 876 | |
| 877 | self.assertNotEqual(A, B.A) |
| 878 | self.assertNotEqual(A, mod_generics_cache.A) |
| 879 | self.assertNotEqual(A, mod_generics_cache.B.A) |
| 880 | self.assertNotEqual(B.A, mod_generics_cache.A) |
| 881 | self.assertNotEqual(B.A, mod_generics_cache.B.A) |
| 882 | |
| 883 | self.assertNotEqual(A[str], B.A[str]) |
| 884 | self.assertNotEqual(A[List[Any]], B.A[List[Any]]) |
| 885 | self.assertNotEqual(A[str], mod_generics_cache.A[str]) |
| 886 | self.assertNotEqual(A[str], mod_generics_cache.B.A[str]) |
| 887 | self.assertNotEqual(B.A[int], mod_generics_cache.A[int]) |
| 888 | self.assertNotEqual(B.A[List[Any]], mod_generics_cache.B.A[List[Any]]) |
| 889 | |
| 890 | self.assertNotEqual(Tuple[A[str]], Tuple[B.A[str]]) |
| 891 | self.assertNotEqual(Tuple[A[List[Any]]], Tuple[B.A[List[Any]]]) |
| 892 | self.assertNotEqual(Union[str, A[str]], Union[str, mod_generics_cache.A[str]]) |
| 893 | self.assertNotEqual(Union[A[str], A[str]], |
| 894 | Union[A[str], mod_generics_cache.A[str]]) |
| 895 | self.assertNotEqual(typing.FrozenSet[A[str]], |
| 896 | typing.FrozenSet[mod_generics_cache.B.A[str]]) |
| 897 | |
| 898 | if sys.version_info[:2] > (3, 2): |
| 899 | self.assertTrue(repr(Tuple[A[str]]).endswith('<locals>.A[str]]')) |
| 900 | self.assertTrue(repr(Tuple[B.A[str]]).endswith('<locals>.B.A[str]]')) |
| 901 | self.assertTrue(repr(Tuple[mod_generics_cache.A[str]]) |
| 902 | .endswith('mod_generics_cache.A[str]]')) |
| 903 | self.assertTrue(repr(Tuple[mod_generics_cache.B.A[str]]) |
| 904 | .endswith('mod_generics_cache.B.A[str]]')) |
| 905 | |
Guido van Rossum | 5fc25a8 | 2016-10-29 08:54:56 -0700 | [diff] [blame] | 906 | def test_extended_generic_rules_eq(self): |
| 907 | T = TypeVar('T') |
| 908 | U = TypeVar('U') |
| 909 | self.assertEqual(Tuple[T, T][int], Tuple[int, int]) |
| 910 | self.assertEqual(typing.Iterable[Tuple[T, T]][T], typing.Iterable[Tuple[T, T]]) |
| 911 | with self.assertRaises(TypeError): |
| 912 | Tuple[T, int][()] |
| 913 | with self.assertRaises(TypeError): |
| 914 | Tuple[T, U][T, ...] |
| 915 | |
| 916 | self.assertEqual(Union[T, int][int], int) |
| 917 | self.assertEqual(Union[T, U][int, Union[int, str]], Union[int, str]) |
| 918 | class Base: ... |
| 919 | class Derived(Base): ... |
Ivan Levkivskyi | f65e31f | 2018-05-18 16:00:38 -0700 | [diff] [blame] | 920 | self.assertEqual(Union[T, Base][Union[Base, Derived]], Union[Base, Derived]) |
Guido van Rossum | 5fc25a8 | 2016-10-29 08:54:56 -0700 | [diff] [blame] | 921 | with self.assertRaises(TypeError): |
| 922 | Union[T, int][1] |
| 923 | |
| 924 | self.assertEqual(Callable[[T], T][KT], Callable[[KT], KT]) |
| 925 | self.assertEqual(Callable[..., List[T]][int], Callable[..., List[int]]) |
| 926 | with self.assertRaises(TypeError): |
| 927 | Callable[[T], U][..., int] |
| 928 | with self.assertRaises(TypeError): |
| 929 | Callable[[T], U][[], int] |
| 930 | |
| 931 | def test_extended_generic_rules_repr(self): |
| 932 | T = TypeVar('T') |
| 933 | self.assertEqual(repr(Union[Tuple, Callable]).replace('typing.', ''), |
| 934 | 'Union[Tuple, Callable]') |
| 935 | self.assertEqual(repr(Union[Tuple, Tuple[int]]).replace('typing.', ''), |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 936 | 'Union[Tuple, Tuple[int]]') |
Guido van Rossum | 5fc25a8 | 2016-10-29 08:54:56 -0700 | [diff] [blame] | 937 | self.assertEqual(repr(Callable[..., Optional[T]][int]).replace('typing.', ''), |
| 938 | 'Callable[..., Union[int, NoneType]]') |
| 939 | self.assertEqual(repr(Callable[[], List[T]][int]).replace('typing.', ''), |
| 940 | 'Callable[[], List[int]]') |
| 941 | |
Guido van Rossum | f9099de | 2016-11-09 13:18:59 -0800 | [diff] [blame] | 942 | def test_generic_forward_ref(self): |
| 943 | def foobar(x: List[List['CC']]): ... |
| 944 | class CC: ... |
Guido van Rossum | d7adfe1 | 2017-01-22 17:43:53 -0800 | [diff] [blame] | 945 | self.assertEqual( |
| 946 | get_type_hints(foobar, globals(), locals()), |
| 947 | {'x': List[List[CC]]} |
| 948 | ) |
Guido van Rossum | 5fc25a8 | 2016-10-29 08:54:56 -0700 | [diff] [blame] | 949 | T = TypeVar('T') |
Guido van Rossum | ca4b252 | 2016-11-19 10:32:41 -0800 | [diff] [blame] | 950 | AT = Tuple[T, ...] |
| 951 | def barfoo(x: AT): ... |
| 952 | self.assertIs(get_type_hints(barfoo, globals(), locals())['x'], AT) |
| 953 | CT = Callable[..., List[T]] |
| 954 | def barfoo2(x: CT): ... |
| 955 | self.assertIs(get_type_hints(barfoo2, globals(), locals())['x'], CT) |
Guido van Rossum | 5fc25a8 | 2016-10-29 08:54:56 -0700 | [diff] [blame] | 956 | |
| 957 | def test_extended_generic_rules_subclassing(self): |
| 958 | class T1(Tuple[T, KT]): ... |
| 959 | class T2(Tuple[T, ...]): ... |
| 960 | class C1(Callable[[T], T]): ... |
| 961 | class C2(Callable[..., int]): |
| 962 | def __call__(self): |
| 963 | return None |
| 964 | |
| 965 | self.assertEqual(T1.__parameters__, (T, KT)) |
| 966 | self.assertEqual(T1[int, str].__args__, (int, str)) |
| 967 | self.assertEqual(T1[int, T].__origin__, T1) |
| 968 | |
| 969 | self.assertEqual(T2.__parameters__, (T,)) |
| 970 | with self.assertRaises(TypeError): |
| 971 | T1[int] |
| 972 | with self.assertRaises(TypeError): |
| 973 | T2[int, str] |
| 974 | |
| 975 | self.assertEqual(repr(C1[int]).split('.')[-1], 'C1[int]') |
| 976 | self.assertEqual(C2.__parameters__, ()) |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 977 | self.assertIsInstance(C2(), collections.abc.Callable) |
| 978 | self.assertIsSubclass(C2, collections.abc.Callable) |
| 979 | self.assertIsSubclass(C1, collections.abc.Callable) |
Guido van Rossum | 5fc25a8 | 2016-10-29 08:54:56 -0700 | [diff] [blame] | 980 | self.assertIsInstance(T1(), tuple) |
| 981 | self.assertIsSubclass(T2, tuple) |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 982 | with self.assertRaises(TypeError): |
| 983 | issubclass(Tuple[int, ...], typing.Sequence) |
| 984 | with self.assertRaises(TypeError): |
| 985 | issubclass(Tuple[int, ...], typing.Iterable) |
Guido van Rossum | 5fc25a8 | 2016-10-29 08:54:56 -0700 | [diff] [blame] | 986 | |
| 987 | def test_fail_with_bare_union(self): |
| 988 | with self.assertRaises(TypeError): |
| 989 | List[Union] |
| 990 | with self.assertRaises(TypeError): |
| 991 | Tuple[Optional] |
| 992 | with self.assertRaises(TypeError): |
| 993 | ClassVar[ClassVar] |
| 994 | with self.assertRaises(TypeError): |
| 995 | List[ClassVar[int]] |
| 996 | |
| 997 | def test_fail_with_bare_generic(self): |
| 998 | T = TypeVar('T') |
| 999 | with self.assertRaises(TypeError): |
| 1000 | List[Generic] |
| 1001 | with self.assertRaises(TypeError): |
| 1002 | Tuple[Generic[T]] |
| 1003 | with self.assertRaises(TypeError): |
| 1004 | List[typing._Protocol] |
| 1005 | |
| 1006 | def test_type_erasure_special(self): |
| 1007 | T = TypeVar('T') |
Guido van Rossum | ca4b252 | 2016-11-19 10:32:41 -0800 | [diff] [blame] | 1008 | # this is the only test that checks type caching |
| 1009 | self.clear_caches() |
Guido van Rossum | 5fc25a8 | 2016-10-29 08:54:56 -0700 | [diff] [blame] | 1010 | class MyTup(Tuple[T, T]): ... |
| 1011 | self.assertIs(MyTup[int]().__class__, MyTup) |
| 1012 | self.assertIs(MyTup[int]().__orig_class__, MyTup[int]) |
| 1013 | class MyCall(Callable[..., T]): |
| 1014 | def __call__(self): return None |
| 1015 | self.assertIs(MyCall[T]().__class__, MyCall) |
| 1016 | self.assertIs(MyCall[T]().__orig_class__, MyCall[T]) |
| 1017 | class MyDict(typing.Dict[T, T]): ... |
| 1018 | self.assertIs(MyDict[int]().__class__, MyDict) |
| 1019 | self.assertIs(MyDict[int]().__orig_class__, MyDict[int]) |
| 1020 | class MyDef(typing.DefaultDict[str, T]): ... |
| 1021 | self.assertIs(MyDef[int]().__class__, MyDef) |
| 1022 | self.assertIs(MyDef[int]().__orig_class__, MyDef[int]) |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1023 | # ChainMap was added in 3.3 |
| 1024 | if sys.version_info >= (3, 3): |
| 1025 | class MyChain(typing.ChainMap[str, T]): ... |
| 1026 | self.assertIs(MyChain[int]().__class__, MyChain) |
| 1027 | self.assertIs(MyChain[int]().__orig_class__, MyChain[int]) |
Guido van Rossum | 5fc25a8 | 2016-10-29 08:54:56 -0700 | [diff] [blame] | 1028 | |
| 1029 | def test_all_repr_eq_any(self): |
| 1030 | objs = (getattr(typing, el) for el in typing.__all__) |
| 1031 | for obj in objs: |
| 1032 | self.assertNotEqual(repr(obj), '') |
| 1033 | self.assertEqual(obj, obj) |
| 1034 | if getattr(obj, '__parameters__', None) and len(obj.__parameters__) == 1: |
| 1035 | self.assertEqual(obj[Any].__args__, (Any,)) |
| 1036 | if isinstance(obj, type): |
| 1037 | for base in obj.__mro__: |
| 1038 | self.assertNotEqual(repr(base), '') |
| 1039 | self.assertEqual(base, base) |
| 1040 | |
Guido van Rossum | bb7c57c | 2015-11-18 21:12:58 -0800 | [diff] [blame] | 1041 | def test_pickle(self): |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1042 | global C # pickle wants to reference the class by name |
Guido van Rossum | bb7c57c | 2015-11-18 21:12:58 -0800 | [diff] [blame] | 1043 | T = TypeVar('T') |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1044 | |
Guido van Rossum | bb7c57c | 2015-11-18 21:12:58 -0800 | [diff] [blame] | 1045 | class B(Generic[T]): |
| 1046 | pass |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1047 | |
Guido van Rossum | bb7c57c | 2015-11-18 21:12:58 -0800 | [diff] [blame] | 1048 | class C(B[int]): |
| 1049 | pass |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1050 | |
Guido van Rossum | bb7c57c | 2015-11-18 21:12:58 -0800 | [diff] [blame] | 1051 | c = C() |
| 1052 | c.foo = 42 |
| 1053 | c.bar = 'abc' |
Serhiy Storchaka | 6d9e923 | 2015-11-20 18:33:02 +0200 | [diff] [blame] | 1054 | for proto in range(pickle.HIGHEST_PROTOCOL + 1): |
| 1055 | z = pickle.dumps(c, proto) |
| 1056 | x = pickle.loads(z) |
| 1057 | self.assertEqual(x.foo, 42) |
| 1058 | self.assertEqual(x.bar, 'abc') |
| 1059 | self.assertEqual(x.__dict__, {'foo': 42, 'bar': 'abc'}) |
Ivan Levkivskyi | 8349403 | 2018-03-26 23:01:12 +0100 | [diff] [blame] | 1060 | samples = [Any, Union, Tuple, Callable, ClassVar, |
Ivan Levkivskyi | 2a363d2 | 2018-04-05 01:25:15 +0100 | [diff] [blame] | 1061 | Union[int, str], ClassVar[List], Tuple[int, ...], Callable[[str], bytes], |
| 1062 | typing.DefaultDict, typing.FrozenSet[int]] |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 1063 | for s in samples: |
Guido van Rossum | b7dedc8 | 2016-10-29 12:44:29 -0700 | [diff] [blame] | 1064 | for proto in range(pickle.HIGHEST_PROTOCOL + 1): |
| 1065 | z = pickle.dumps(s, proto) |
| 1066 | x = pickle.loads(z) |
| 1067 | self.assertEqual(s, x) |
Ivan Levkivskyi | 8349403 | 2018-03-26 23:01:12 +0100 | [diff] [blame] | 1068 | more_samples = [List, typing.Iterable, typing.Type, List[int], |
Ivan Levkivskyi | 2a363d2 | 2018-04-05 01:25:15 +0100 | [diff] [blame] | 1069 | typing.Type[typing.Mapping], typing.AbstractSet[Tuple[int, str]]] |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 1070 | for s in more_samples: |
| 1071 | for proto in range(pickle.HIGHEST_PROTOCOL + 1): |
| 1072 | z = pickle.dumps(s, proto) |
| 1073 | x = pickle.loads(z) |
Ivan Levkivskyi | 8349403 | 2018-03-26 23:01:12 +0100 | [diff] [blame] | 1074 | self.assertEqual(s, x) |
Guido van Rossum | b7dedc8 | 2016-10-29 12:44:29 -0700 | [diff] [blame] | 1075 | |
| 1076 | def test_copy_and_deepcopy(self): |
| 1077 | T = TypeVar('T') |
| 1078 | class Node(Generic[T]): ... |
| 1079 | things = [Union[T, int], Tuple[T, int], Callable[..., T], Callable[[int], int], |
| 1080 | Tuple[Any, Any], Node[T], Node[int], Node[Any], typing.Iterable[T], |
| 1081 | typing.Iterable[Any], typing.Iterable[int], typing.Dict[int, str], |
| 1082 | typing.Dict[T, Any], ClassVar[int], ClassVar[List[T]], Tuple['T', 'T'], |
| 1083 | Union['T', int], List['T'], typing.Mapping['T', int]] |
| 1084 | for t in things + [Any]: |
| 1085 | self.assertEqual(t, copy(t)) |
Ivan Levkivskyi | 8349403 | 2018-03-26 23:01:12 +0100 | [diff] [blame] | 1086 | self.assertEqual(t, deepcopy(t)) |
| 1087 | |
| 1088 | def test_immutability_by_copy_and_pickle(self): |
| 1089 | # Special forms like Union, Any, etc., generic aliases to containers like List, |
| 1090 | # Mapping, etc., and type variabcles are considered immutable by copy and pickle. |
| 1091 | global TP, TPB, TPV # for pickle |
| 1092 | TP = TypeVar('TP') |
| 1093 | TPB = TypeVar('TPB', bound=int) |
| 1094 | TPV = TypeVar('TPV', bytes, str) |
| 1095 | for X in [TP, TPB, TPV, List, typing.Mapping, ClassVar, typing.Iterable, |
| 1096 | Union, Any, Tuple, Callable]: |
| 1097 | self.assertIs(copy(X), X) |
| 1098 | self.assertIs(deepcopy(X), X) |
| 1099 | self.assertIs(pickle.loads(pickle.dumps(X)), X) |
| 1100 | # Check that local type variables are copyable. |
| 1101 | TL = TypeVar('TL') |
| 1102 | TLB = TypeVar('TLB', bound=int) |
| 1103 | TLV = TypeVar('TLV', bytes, str) |
| 1104 | for X in [TL, TLB, TLV]: |
| 1105 | self.assertIs(copy(X), X) |
| 1106 | self.assertIs(deepcopy(X), X) |
Guido van Rossum | bb7c57c | 2015-11-18 21:12:58 -0800 | [diff] [blame] | 1107 | |
Ivan Levkivskyi | 29bc193 | 2017-12-05 03:43:58 +0100 | [diff] [blame] | 1108 | def test_copy_generic_instances(self): |
| 1109 | T = TypeVar('T') |
| 1110 | class C(Generic[T]): |
| 1111 | def __init__(self, attr: T) -> None: |
| 1112 | self.attr = attr |
| 1113 | |
| 1114 | c = C(42) |
| 1115 | self.assertEqual(copy(c).attr, 42) |
| 1116 | self.assertEqual(deepcopy(c).attr, 42) |
| 1117 | self.assertIsNot(copy(c), c) |
| 1118 | self.assertIsNot(deepcopy(c), c) |
| 1119 | c.attr = 1 |
| 1120 | self.assertEqual(copy(c).attr, 1) |
| 1121 | self.assertEqual(deepcopy(c).attr, 1) |
| 1122 | ci = C[int](42) |
| 1123 | self.assertEqual(copy(ci).attr, 42) |
| 1124 | self.assertEqual(deepcopy(ci).attr, 42) |
| 1125 | self.assertIsNot(copy(ci), ci) |
| 1126 | self.assertIsNot(deepcopy(ci), ci) |
| 1127 | ci.attr = 1 |
| 1128 | self.assertEqual(copy(ci).attr, 1) |
| 1129 | self.assertEqual(deepcopy(ci).attr, 1) |
| 1130 | self.assertEqual(ci.__orig_class__, C[int]) |
| 1131 | |
Guido van Rossum | 83ec302 | 2017-01-17 20:43:28 -0800 | [diff] [blame] | 1132 | def test_weakref_all(self): |
| 1133 | T = TypeVar('T') |
| 1134 | things = [Any, Union[T, int], Callable[..., T], Tuple[Any, Any], |
| 1135 | Optional[List[int]], typing.Mapping[int, str], |
| 1136 | typing.re.Match[bytes], typing.Iterable['whatever']] |
| 1137 | for t in things: |
| 1138 | self.assertEqual(weakref.ref(t)(), t) |
| 1139 | |
Guido van Rossum | 61f0a02 | 2016-11-29 09:46:21 -0800 | [diff] [blame] | 1140 | def test_parameterized_slots(self): |
| 1141 | T = TypeVar('T') |
| 1142 | class C(Generic[T]): |
| 1143 | __slots__ = ('potato',) |
| 1144 | |
| 1145 | c = C() |
| 1146 | c_int = C[int]() |
Guido van Rossum | 61f0a02 | 2016-11-29 09:46:21 -0800 | [diff] [blame] | 1147 | |
| 1148 | c.potato = 0 |
| 1149 | c_int.potato = 0 |
| 1150 | with self.assertRaises(AttributeError): |
| 1151 | c.tomato = 0 |
| 1152 | with self.assertRaises(AttributeError): |
| 1153 | c_int.tomato = 0 |
| 1154 | |
| 1155 | def foo(x: C['C']): ... |
| 1156 | self.assertEqual(get_type_hints(foo, globals(), locals())['x'], C[C]) |
Guido van Rossum | 61f0a02 | 2016-11-29 09:46:21 -0800 | [diff] [blame] | 1157 | self.assertEqual(copy(C[int]), deepcopy(C[int])) |
| 1158 | |
| 1159 | def test_parameterized_slots_dict(self): |
| 1160 | T = TypeVar('T') |
| 1161 | class D(Generic[T]): |
| 1162 | __slots__ = {'banana': 42} |
| 1163 | |
| 1164 | d = D() |
| 1165 | d_int = D[int]() |
Guido van Rossum | 61f0a02 | 2016-11-29 09:46:21 -0800 | [diff] [blame] | 1166 | |
| 1167 | d.banana = 'yes' |
| 1168 | d_int.banana = 'yes' |
| 1169 | with self.assertRaises(AttributeError): |
| 1170 | d.foobar = 'no' |
| 1171 | with self.assertRaises(AttributeError): |
| 1172 | d_int.foobar = 'no' |
| 1173 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1174 | def test_errors(self): |
| 1175 | with self.assertRaises(TypeError): |
| 1176 | B = SimpleMapping[XK, Any] |
| 1177 | |
| 1178 | class C(Generic[B]): |
| 1179 | pass |
| 1180 | |
| 1181 | def test_repr_2(self): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1182 | class C(Generic[T]): |
| 1183 | pass |
| 1184 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1185 | self.assertEqual(C.__module__, __name__) |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 1186 | self.assertEqual(C.__qualname__, |
| 1187 | 'GenericTests.test_repr_2.<locals>.C') |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1188 | X = C[int] |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1189 | self.assertEqual(X.__module__, __name__) |
Guido van Rossum | 7ef22d6 | 2016-10-21 14:27:58 -0700 | [diff] [blame] | 1190 | self.assertEqual(repr(X).split('.')[-1], 'C[int]') |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1191 | |
| 1192 | class Y(C[int]): |
| 1193 | pass |
| 1194 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1195 | self.assertEqual(Y.__module__, __name__) |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 1196 | self.assertEqual(Y.__qualname__, |
| 1197 | 'GenericTests.test_repr_2.<locals>.Y') |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1198 | |
| 1199 | def test_eq_1(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1200 | self.assertEqual(Generic, Generic) |
| 1201 | self.assertEqual(Generic[T], Generic[T]) |
| 1202 | self.assertNotEqual(Generic[KT], Generic[VT]) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1203 | |
| 1204 | def test_eq_2(self): |
| 1205 | |
| 1206 | class A(Generic[T]): |
| 1207 | pass |
| 1208 | |
| 1209 | class B(Generic[T]): |
| 1210 | pass |
| 1211 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1212 | self.assertEqual(A, A) |
| 1213 | self.assertNotEqual(A, B) |
| 1214 | self.assertEqual(A[T], A[T]) |
| 1215 | self.assertNotEqual(A[T], B[T]) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1216 | |
| 1217 | def test_multiple_inheritance(self): |
| 1218 | |
| 1219 | class A(Generic[T, VT]): |
| 1220 | pass |
| 1221 | |
| 1222 | class B(Generic[KT, T]): |
| 1223 | pass |
| 1224 | |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1225 | class C(A[T, VT], Generic[VT, T, KT], B[KT, T]): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1226 | pass |
| 1227 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1228 | self.assertEqual(C.__parameters__, (VT, T, KT)) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1229 | |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 1230 | def test_multiple_inheritance_special(self): |
| 1231 | S = TypeVar('S') |
| 1232 | class B(Generic[S]): ... |
| 1233 | class C(List[int], B): ... |
| 1234 | self.assertEqual(C.__mro__, (C, list, B, Generic, object)) |
| 1235 | |
Ivan Levkivskyi | ee566fe | 2018-04-04 17:00:15 +0100 | [diff] [blame] | 1236 | def test_init_subclass_super_called(self): |
| 1237 | class FinalException(Exception): |
| 1238 | pass |
| 1239 | |
| 1240 | class Final: |
| 1241 | def __init_subclass__(cls, **kwargs) -> None: |
| 1242 | for base in cls.__bases__: |
| 1243 | if base is not Final and issubclass(base, Final): |
| 1244 | raise FinalException(base) |
| 1245 | super().__init_subclass__(**kwargs) |
| 1246 | class Test(Generic[T], Final): |
| 1247 | pass |
| 1248 | with self.assertRaises(FinalException): |
| 1249 | class Subclass(Test): |
| 1250 | pass |
| 1251 | with self.assertRaises(FinalException): |
| 1252 | class Subclass(Test[int]): |
| 1253 | pass |
| 1254 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1255 | def test_nested(self): |
| 1256 | |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1257 | G = Generic |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1258 | |
| 1259 | class Visitor(G[T]): |
| 1260 | |
| 1261 | a = None |
| 1262 | |
| 1263 | def set(self, a: T): |
| 1264 | self.a = a |
| 1265 | |
| 1266 | def get(self): |
| 1267 | return self.a |
| 1268 | |
| 1269 | def visit(self) -> T: |
| 1270 | return self.a |
| 1271 | |
| 1272 | V = Visitor[typing.List[int]] |
| 1273 | |
| 1274 | class IntListVisitor(V): |
| 1275 | |
| 1276 | def append(self, x: int): |
| 1277 | self.a.append(x) |
| 1278 | |
| 1279 | a = IntListVisitor() |
| 1280 | a.set([]) |
| 1281 | a.append(1) |
| 1282 | a.append(42) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1283 | self.assertEqual(a.get(), [1, 42]) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1284 | |
| 1285 | def test_type_erasure(self): |
| 1286 | T = TypeVar('T') |
| 1287 | |
| 1288 | class Node(Generic[T]): |
Guido van Rossum | 1b66910 | 2015-09-04 12:15:54 -0700 | [diff] [blame] | 1289 | def __init__(self, label: T, |
| 1290 | left: 'Node[T]' = None, |
| 1291 | right: 'Node[T]' = None): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1292 | self.label = label # type: T |
| 1293 | self.left = left # type: Optional[Node[T]] |
| 1294 | self.right = right # type: Optional[Node[T]] |
| 1295 | |
| 1296 | def foo(x: T): |
| 1297 | a = Node(x) |
| 1298 | b = Node[T](x) |
| 1299 | c = Node[Any](x) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1300 | self.assertIs(type(a), Node) |
| 1301 | self.assertIs(type(b), Node) |
| 1302 | self.assertIs(type(c), Node) |
| 1303 | self.assertEqual(a.label, x) |
| 1304 | self.assertEqual(b.label, x) |
| 1305 | self.assertEqual(c.label, x) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1306 | |
| 1307 | foo(42) |
| 1308 | |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1309 | def test_implicit_any(self): |
| 1310 | T = TypeVar('T') |
| 1311 | |
| 1312 | class C(Generic[T]): |
| 1313 | pass |
| 1314 | |
| 1315 | class D(C): |
| 1316 | pass |
| 1317 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1318 | self.assertEqual(D.__parameters__, ()) |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1319 | |
| 1320 | with self.assertRaises(Exception): |
| 1321 | D[int] |
| 1322 | with self.assertRaises(Exception): |
| 1323 | D[Any] |
| 1324 | with self.assertRaises(Exception): |
| 1325 | D[T] |
| 1326 | |
Ivan Levkivskyi | 43d12a6 | 2018-05-09 02:23:46 +0100 | [diff] [blame] | 1327 | def test_new_with_args(self): |
| 1328 | |
| 1329 | class A(Generic[T]): |
| 1330 | pass |
| 1331 | |
| 1332 | class B: |
| 1333 | def __new__(cls, arg): |
| 1334 | # call object |
| 1335 | obj = super().__new__(cls) |
| 1336 | obj.arg = arg |
| 1337 | return obj |
| 1338 | |
| 1339 | # mro: C, A, Generic, B, object |
| 1340 | class C(A, B): |
| 1341 | pass |
| 1342 | |
| 1343 | c = C('foo') |
| 1344 | self.assertEqual(c.arg, 'foo') |
| 1345 | |
| 1346 | def test_new_with_args2(self): |
| 1347 | |
| 1348 | class A: |
| 1349 | def __init__(self, arg): |
| 1350 | self.from_a = arg |
| 1351 | # call object |
| 1352 | super().__init__() |
| 1353 | |
| 1354 | # mro: C, Generic, A, object |
| 1355 | class C(Generic[T], A): |
| 1356 | def __init__(self, arg): |
| 1357 | self.from_c = arg |
| 1358 | # call Generic |
| 1359 | super().__init__(arg) |
| 1360 | |
| 1361 | c = C('foo') |
| 1362 | self.assertEqual(c.from_a, 'foo') |
| 1363 | self.assertEqual(c.from_c, 'foo') |
| 1364 | |
| 1365 | def test_new_no_args(self): |
| 1366 | |
| 1367 | class A(Generic[T]): |
| 1368 | pass |
| 1369 | |
Ivan Levkivskyi | b551e9f | 2018-05-10 23:10:10 -0400 | [diff] [blame] | 1370 | with self.assertRaises(TypeError): |
| 1371 | A('foo') |
| 1372 | |
Ivan Levkivskyi | 43d12a6 | 2018-05-09 02:23:46 +0100 | [diff] [blame] | 1373 | class B: |
| 1374 | def __new__(cls): |
| 1375 | # call object |
| 1376 | obj = super().__new__(cls) |
| 1377 | obj.from_b = 'b' |
| 1378 | return obj |
| 1379 | |
| 1380 | # mro: C, A, Generic, B, object |
| 1381 | class C(A, B): |
| 1382 | def __init__(self, arg): |
| 1383 | self.arg = arg |
| 1384 | |
| 1385 | def __new__(cls, arg): |
| 1386 | # call A |
| 1387 | obj = super().__new__(cls) |
| 1388 | obj.from_c = 'c' |
| 1389 | return obj |
| 1390 | |
| 1391 | c = C('foo') |
| 1392 | self.assertEqual(c.arg, 'foo') |
| 1393 | self.assertEqual(c.from_b, 'b') |
| 1394 | self.assertEqual(c.from_c, 'c') |
| 1395 | |
Guido van Rossum | d7adfe1 | 2017-01-22 17:43:53 -0800 | [diff] [blame] | 1396 | |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1397 | class ClassVarTests(BaseTestCase): |
| 1398 | |
| 1399 | def test_basics(self): |
| 1400 | with self.assertRaises(TypeError): |
| 1401 | ClassVar[1] |
| 1402 | with self.assertRaises(TypeError): |
| 1403 | ClassVar[int, str] |
| 1404 | with self.assertRaises(TypeError): |
| 1405 | ClassVar[int][str] |
| 1406 | |
| 1407 | def test_repr(self): |
| 1408 | self.assertEqual(repr(ClassVar), 'typing.ClassVar') |
| 1409 | cv = ClassVar[int] |
| 1410 | self.assertEqual(repr(cv), 'typing.ClassVar[int]') |
| 1411 | cv = ClassVar[Employee] |
| 1412 | self.assertEqual(repr(cv), 'typing.ClassVar[%s.Employee]' % __name__) |
| 1413 | |
| 1414 | def test_cannot_subclass(self): |
| 1415 | with self.assertRaises(TypeError): |
| 1416 | class C(type(ClassVar)): |
| 1417 | pass |
| 1418 | with self.assertRaises(TypeError): |
| 1419 | class C(type(ClassVar[int])): |
| 1420 | pass |
| 1421 | |
| 1422 | def test_cannot_init(self): |
| 1423 | with self.assertRaises(TypeError): |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 1424 | ClassVar() |
| 1425 | with self.assertRaises(TypeError): |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1426 | type(ClassVar)() |
| 1427 | with self.assertRaises(TypeError): |
| 1428 | type(ClassVar[Optional[int]])() |
| 1429 | |
| 1430 | def test_no_isinstance(self): |
| 1431 | with self.assertRaises(TypeError): |
| 1432 | isinstance(1, ClassVar[int]) |
| 1433 | with self.assertRaises(TypeError): |
| 1434 | issubclass(int, ClassVar) |
| 1435 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1436 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1437 | class CastTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1438 | |
| 1439 | def test_basics(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1440 | self.assertEqual(cast(int, 42), 42) |
| 1441 | self.assertEqual(cast(float, 42), 42) |
| 1442 | self.assertIs(type(cast(float, 42)), int) |
| 1443 | self.assertEqual(cast(Any, 42), 42) |
| 1444 | self.assertEqual(cast(list, 42), 42) |
| 1445 | self.assertEqual(cast(Union[str, float], 42), 42) |
| 1446 | self.assertEqual(cast(AnyStr, 42), 42) |
| 1447 | self.assertEqual(cast(None, 42), 42) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1448 | |
| 1449 | def test_errors(self): |
| 1450 | # Bogus calls are not expected to fail. |
| 1451 | cast(42, 42) |
| 1452 | cast('hello', 42) |
| 1453 | |
| 1454 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1455 | class ForwardRefTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1456 | |
| 1457 | def test_basics(self): |
| 1458 | |
| 1459 | class Node(Generic[T]): |
| 1460 | |
| 1461 | def __init__(self, label: T): |
| 1462 | self.label = label |
| 1463 | self.left = self.right = None |
| 1464 | |
| 1465 | def add_both(self, |
| 1466 | left: 'Optional[Node[T]]', |
| 1467 | right: 'Node[T]' = None, |
| 1468 | stuff: int = None, |
| 1469 | blah=None): |
| 1470 | self.left = left |
| 1471 | self.right = right |
| 1472 | |
| 1473 | def add_left(self, node: Optional['Node[T]']): |
| 1474 | self.add_both(node, None) |
| 1475 | |
| 1476 | def add_right(self, node: 'Node[T]' = None): |
| 1477 | self.add_both(None, node) |
| 1478 | |
| 1479 | t = Node[int] |
| 1480 | both_hints = get_type_hints(t.add_both, globals(), locals()) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1481 | self.assertEqual(both_hints['left'], Optional[Node[T]]) |
| 1482 | self.assertEqual(both_hints['right'], Optional[Node[T]]) |
| 1483 | self.assertEqual(both_hints['left'], both_hints['right']) |
| 1484 | self.assertEqual(both_hints['stuff'], Optional[int]) |
| 1485 | self.assertNotIn('blah', both_hints) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1486 | |
| 1487 | left_hints = get_type_hints(t.add_left, globals(), locals()) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1488 | self.assertEqual(left_hints['node'], Optional[Node[T]]) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1489 | |
| 1490 | right_hints = get_type_hints(t.add_right, globals(), locals()) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1491 | self.assertEqual(right_hints['node'], Optional[Node[T]]) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1492 | |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 1493 | def test_forwardref_instance_type_error(self): |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 1494 | fr = typing.ForwardRef('int') |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 1495 | with self.assertRaises(TypeError): |
| 1496 | isinstance(42, fr) |
| 1497 | |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1498 | def test_forwardref_subclass_type_error(self): |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 1499 | fr = typing.ForwardRef('int') |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1500 | with self.assertRaises(TypeError): |
| 1501 | issubclass(int, fr) |
| 1502 | |
| 1503 | def test_forward_equality(self): |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 1504 | fr = typing.ForwardRef('int') |
| 1505 | self.assertEqual(fr, typing.ForwardRef('int')) |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1506 | self.assertNotEqual(List['int'], List[int]) |
| 1507 | |
| 1508 | def test_forward_repr(self): |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 1509 | self.assertEqual(repr(List['int']), "typing.List[ForwardRef('int')]") |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1510 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1511 | def test_union_forward(self): |
| 1512 | |
| 1513 | def foo(a: Union['T']): |
| 1514 | pass |
| 1515 | |
| 1516 | self.assertEqual(get_type_hints(foo, globals(), locals()), |
| 1517 | {'a': Union[T]}) |
| 1518 | |
| 1519 | def test_tuple_forward(self): |
| 1520 | |
| 1521 | def foo(a: Tuple['T']): |
| 1522 | pass |
| 1523 | |
| 1524 | self.assertEqual(get_type_hints(foo, globals(), locals()), |
| 1525 | {'a': Tuple[T]}) |
| 1526 | |
| 1527 | def test_callable_forward(self): |
| 1528 | |
| 1529 | def foo(a: Callable[['T'], 'T']): |
| 1530 | pass |
| 1531 | |
| 1532 | self.assertEqual(get_type_hints(foo, globals(), locals()), |
| 1533 | {'a': Callable[[T], T]}) |
| 1534 | |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 1535 | def test_callable_with_ellipsis_forward(self): |
| 1536 | |
| 1537 | def foo(a: 'Callable[..., T]'): |
| 1538 | pass |
| 1539 | |
| 1540 | self.assertEqual(get_type_hints(foo, globals(), locals()), |
| 1541 | {'a': Callable[..., T]}) |
| 1542 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1543 | def test_syntax_error(self): |
| 1544 | |
| 1545 | with self.assertRaises(SyntaxError): |
| 1546 | Generic['/T'] |
| 1547 | |
| 1548 | def test_delayed_syntax_error(self): |
| 1549 | |
| 1550 | def foo(a: 'Node[T'): |
| 1551 | pass |
| 1552 | |
| 1553 | with self.assertRaises(SyntaxError): |
| 1554 | get_type_hints(foo) |
| 1555 | |
| 1556 | def test_type_error(self): |
| 1557 | |
| 1558 | def foo(a: Tuple['42']): |
| 1559 | pass |
| 1560 | |
| 1561 | with self.assertRaises(TypeError): |
| 1562 | get_type_hints(foo) |
| 1563 | |
| 1564 | def test_name_error(self): |
| 1565 | |
| 1566 | def foo(a: 'Noode[T]'): |
| 1567 | pass |
| 1568 | |
| 1569 | with self.assertRaises(NameError): |
| 1570 | get_type_hints(foo, locals()) |
| 1571 | |
| 1572 | def test_no_type_check(self): |
| 1573 | |
| 1574 | @no_type_check |
| 1575 | def foo(a: 'whatevers') -> {}: |
| 1576 | pass |
| 1577 | |
| 1578 | th = get_type_hints(foo) |
| 1579 | self.assertEqual(th, {}) |
| 1580 | |
| 1581 | def test_no_type_check_class(self): |
| 1582 | |
| 1583 | @no_type_check |
| 1584 | class C: |
| 1585 | def foo(a: 'whatevers') -> {}: |
| 1586 | pass |
| 1587 | |
| 1588 | cth = get_type_hints(C.foo) |
| 1589 | self.assertEqual(cth, {}) |
| 1590 | ith = get_type_hints(C().foo) |
| 1591 | self.assertEqual(ith, {}) |
| 1592 | |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1593 | def test_no_type_check_no_bases(self): |
| 1594 | class C: |
| 1595 | def meth(self, x: int): ... |
| 1596 | @no_type_check |
| 1597 | class D(C): |
| 1598 | c = C |
| 1599 | # verify that @no_type_check never affects bases |
| 1600 | self.assertEqual(get_type_hints(C.meth), {'x': int}) |
| 1601 | |
Nina Zakharenko | 2d2d3b1 | 2018-05-16 12:27:03 -0400 | [diff] [blame] | 1602 | def test_no_type_check_forward_ref_as_string(self): |
| 1603 | class C: |
| 1604 | foo: typing.ClassVar[int] = 7 |
| 1605 | class D: |
| 1606 | foo: ClassVar[int] = 7 |
| 1607 | class E: |
| 1608 | foo: 'typing.ClassVar[int]' = 7 |
| 1609 | class F: |
| 1610 | foo: 'ClassVar[int]' = 7 |
| 1611 | |
| 1612 | expected_result = {'foo': typing.ClassVar[int]} |
| 1613 | for clazz in [C, D, E, F]: |
| 1614 | self.assertEqual(get_type_hints(clazz), expected_result) |
| 1615 | |
| 1616 | def test_nested_classvar_fails_forward_ref_check(self): |
| 1617 | class E: |
| 1618 | foo: 'typing.ClassVar[typing.ClassVar[int]]' = 7 |
| 1619 | class F: |
| 1620 | foo: ClassVar['ClassVar[int]'] = 7 |
| 1621 | |
| 1622 | for clazz in [E, F]: |
| 1623 | with self.assertRaises(TypeError): |
| 1624 | get_type_hints(clazz) |
| 1625 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1626 | def test_meta_no_type_check(self): |
| 1627 | |
| 1628 | @no_type_check_decorator |
Ăric Araujo | 03b9537 | 2017-10-12 12:28:55 -0400 | [diff] [blame] | 1629 | def magic_decorator(func): |
| 1630 | return func |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1631 | |
| 1632 | self.assertEqual(magic_decorator.__name__, 'magic_decorator') |
| 1633 | |
| 1634 | @magic_decorator |
| 1635 | def foo(a: 'whatevers') -> {}: |
| 1636 | pass |
| 1637 | |
| 1638 | @magic_decorator |
| 1639 | class C: |
| 1640 | def foo(a: 'whatevers') -> {}: |
| 1641 | pass |
| 1642 | |
| 1643 | self.assertEqual(foo.__name__, 'foo') |
| 1644 | th = get_type_hints(foo) |
| 1645 | self.assertEqual(th, {}) |
| 1646 | cth = get_type_hints(C.foo) |
| 1647 | self.assertEqual(cth, {}) |
| 1648 | ith = get_type_hints(C().foo) |
| 1649 | self.assertEqual(ith, {}) |
| 1650 | |
| 1651 | def test_default_globals(self): |
| 1652 | code = ("class C:\n" |
| 1653 | " def foo(self, a: 'C') -> 'D': pass\n" |
| 1654 | "class D:\n" |
| 1655 | " def bar(self, b: 'D') -> C: pass\n" |
| 1656 | ) |
| 1657 | ns = {} |
| 1658 | exec(code, ns) |
| 1659 | hints = get_type_hints(ns['C'].foo) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1660 | self.assertEqual(hints, {'a': ns['C'], 'return': ns['D']}) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1661 | |
| 1662 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1663 | class OverloadTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1664 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1665 | def test_overload_fails(self): |
| 1666 | from typing import overload |
| 1667 | |
| 1668 | with self.assertRaises(RuntimeError): |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1669 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1670 | @overload |
| 1671 | def blah(): |
| 1672 | pass |
| 1673 | |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1674 | blah() |
| 1675 | |
| 1676 | def test_overload_succeeds(self): |
| 1677 | from typing import overload |
| 1678 | |
| 1679 | @overload |
| 1680 | def blah(): |
| 1681 | pass |
| 1682 | |
| 1683 | def blah(): |
| 1684 | pass |
| 1685 | |
| 1686 | blah() |
| 1687 | |
| 1688 | |
Guido van Rossum | ac353df | 2016-10-21 16:12:17 -0700 | [diff] [blame] | 1689 | ASYNCIO_TESTS = """ |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1690 | import asyncio |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1691 | |
Guido van Rossum | 62fe1bb | 2016-10-29 16:05:26 -0700 | [diff] [blame] | 1692 | T_a = TypeVar('T_a') |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1693 | |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1694 | class AwaitableWrapper(typing.Awaitable[T_a]): |
| 1695 | |
| 1696 | def __init__(self, value): |
| 1697 | self.value = value |
| 1698 | |
| 1699 | def __await__(self) -> typing.Iterator[T_a]: |
| 1700 | yield |
| 1701 | return self.value |
| 1702 | |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1703 | class AsyncIteratorWrapper(typing.AsyncIterator[T_a]): |
| 1704 | |
| 1705 | def __init__(self, value: typing.Iterable[T_a]): |
| 1706 | self.value = value |
| 1707 | |
| 1708 | def __aiter__(self) -> typing.AsyncIterator[T_a]: |
| 1709 | return self |
| 1710 | |
Andrew Svetlov | 68b34a7 | 2019-05-16 17:52:10 +0300 | [diff] [blame] | 1711 | async def __anext__(self) -> T_a: |
| 1712 | data = await self.value |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1713 | if data: |
| 1714 | return data |
| 1715 | else: |
| 1716 | raise StopAsyncIteration |
Ivan Levkivskyi | 29fda8d | 2017-06-10 21:57:56 +0200 | [diff] [blame] | 1717 | |
| 1718 | class ACM: |
| 1719 | async def __aenter__(self) -> int: |
| 1720 | return 42 |
| 1721 | async def __aexit__(self, etype, eval, tb): |
| 1722 | return None |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1723 | """ |
| 1724 | |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 1725 | try: |
| 1726 | exec(ASYNCIO_TESTS) |
| 1727 | except ImportError: |
| 1728 | ASYNCIO = False # multithreading is not enabled |
Guido van Rossum | d7adfe1 | 2017-01-22 17:43:53 -0800 | [diff] [blame] | 1729 | else: |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 1730 | ASYNCIO = True |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1731 | |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 1732 | # Definitions needed for features introduced in Python 3.6 |
| 1733 | |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1734 | from test import ann_module, ann_module2, ann_module3 |
Ivan Levkivskyi | 29fda8d | 2017-06-10 21:57:56 +0200 | [diff] [blame] | 1735 | from typing import AsyncContextManager |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1736 | |
Guido van Rossum | 991d14f | 2016-11-09 13:12:51 -0800 | [diff] [blame] | 1737 | class A: |
| 1738 | y: float |
| 1739 | class B(A): |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1740 | x: ClassVar[Optional['B']] = None |
| 1741 | y: int |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1742 | b: int |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1743 | class CSub(B): |
| 1744 | z: ClassVar['CSub'] = B() |
| 1745 | class G(Generic[T]): |
| 1746 | lst: ClassVar[List[T]] = [] |
| 1747 | |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1748 | class NoneAndForward: |
| 1749 | parent: 'NoneAndForward' |
| 1750 | meaning: None |
| 1751 | |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1752 | class CoolEmployee(NamedTuple): |
| 1753 | name: str |
| 1754 | cool: int |
Guido van Rossum | 3c268be | 2017-01-18 08:03:50 -0800 | [diff] [blame] | 1755 | |
| 1756 | class CoolEmployeeWithDefault(NamedTuple): |
| 1757 | name: str |
| 1758 | cool: int = 0 |
Guido van Rossum | 95919c0 | 2017-01-22 17:47:20 -0800 | [diff] [blame] | 1759 | |
| 1760 | class XMeth(NamedTuple): |
| 1761 | x: int |
| 1762 | def double(self): |
| 1763 | return 2 * self.x |
| 1764 | |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1765 | class XRepr(NamedTuple): |
Guido van Rossum | 95919c0 | 2017-01-22 17:47:20 -0800 | [diff] [blame] | 1766 | x: int |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1767 | y: int = 1 |
| 1768 | def __str__(self): |
| 1769 | return f'{self.x} -> {self.y}' |
| 1770 | def __add__(self, other): |
| 1771 | return 0 |
Ivan Levkivskyi | 29fda8d | 2017-06-10 21:57:56 +0200 | [diff] [blame] | 1772 | |
Ćukasz Langa | f350a26 | 2017-09-14 14:33:00 -0400 | [diff] [blame] | 1773 | class HasForeignBaseClass(mod_generics_cache.A): |
| 1774 | some_xrepr: 'XRepr' |
| 1775 | other_a: 'mod_generics_cache.A' |
| 1776 | |
Ivan Levkivskyi | 29fda8d | 2017-06-10 21:57:56 +0200 | [diff] [blame] | 1777 | async def g_with(am: AsyncContextManager[int]): |
| 1778 | x: int |
| 1779 | async with am as x: |
| 1780 | return x |
| 1781 | |
| 1782 | try: |
| 1783 | g_with(ACM()).send(None) |
| 1784 | except StopIteration as e: |
| 1785 | assert e.args[0] == 42 |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1786 | |
| 1787 | gth = get_type_hints |
| 1788 | |
Guido van Rossum | d7adfe1 | 2017-01-22 17:43:53 -0800 | [diff] [blame] | 1789 | |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1790 | class GetTypeHintTests(BaseTestCase): |
Guido van Rossum | 991d14f | 2016-11-09 13:12:51 -0800 | [diff] [blame] | 1791 | def test_get_type_hints_from_various_objects(self): |
| 1792 | # For invalid objects should fail with TypeError (not AttributeError etc). |
| 1793 | with self.assertRaises(TypeError): |
| 1794 | gth(123) |
| 1795 | with self.assertRaises(TypeError): |
| 1796 | gth('abc') |
| 1797 | with self.assertRaises(TypeError): |
| 1798 | gth(None) |
| 1799 | |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1800 | def test_get_type_hints_modules(self): |
Guido van Rossum | d7adfe1 | 2017-01-22 17:43:53 -0800 | [diff] [blame] | 1801 | ann_module_type_hints = {1: 2, 'f': Tuple[int, int], 'x': int, 'y': str} |
| 1802 | self.assertEqual(gth(ann_module), ann_module_type_hints) |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1803 | self.assertEqual(gth(ann_module2), {}) |
| 1804 | self.assertEqual(gth(ann_module3), {}) |
| 1805 | |
Ćukasz Langa | f350a26 | 2017-09-14 14:33:00 -0400 | [diff] [blame] | 1806 | @expectedFailure |
| 1807 | def test_get_type_hints_modules_forwardref(self): |
| 1808 | # FIXME: This currently exposes a bug in typing. Cached forward references |
| 1809 | # don't account for the case where there are multiple types of the same |
| 1810 | # name coming from different modules in the same program. |
| 1811 | mgc_hints = {'default_a': Optional[mod_generics_cache.A], |
| 1812 | 'default_b': Optional[mod_generics_cache.B]} |
| 1813 | self.assertEqual(gth(mod_generics_cache), mgc_hints) |
| 1814 | |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1815 | def test_get_type_hints_classes(self): |
Ćukasz Langa | f350a26 | 2017-09-14 14:33:00 -0400 | [diff] [blame] | 1816 | self.assertEqual(gth(ann_module.C), # gth will find the right globalns |
Guido van Rossum | 991d14f | 2016-11-09 13:12:51 -0800 | [diff] [blame] | 1817 | {'y': Optional[ann_module.C]}) |
| 1818 | self.assertIsInstance(gth(ann_module.j_class), dict) |
| 1819 | self.assertEqual(gth(ann_module.M), {'123': 123, 'o': type}) |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1820 | self.assertEqual(gth(ann_module.D), |
Guido van Rossum | 991d14f | 2016-11-09 13:12:51 -0800 | [diff] [blame] | 1821 | {'j': str, 'k': str, 'y': Optional[ann_module.C]}) |
| 1822 | self.assertEqual(gth(ann_module.Y), {'z': int}) |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1823 | self.assertEqual(gth(ann_module.h_class), |
Guido van Rossum | 991d14f | 2016-11-09 13:12:51 -0800 | [diff] [blame] | 1824 | {'y': Optional[ann_module.C]}) |
| 1825 | self.assertEqual(gth(ann_module.S), {'x': str, 'y': str}) |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1826 | self.assertEqual(gth(ann_module.foo), {'x': int}) |
Ćukasz Langa | f350a26 | 2017-09-14 14:33:00 -0400 | [diff] [blame] | 1827 | self.assertEqual(gth(NoneAndForward), |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1828 | {'parent': NoneAndForward, 'meaning': type(None)}) |
Ćukasz Langa | f350a26 | 2017-09-14 14:33:00 -0400 | [diff] [blame] | 1829 | self.assertEqual(gth(HasForeignBaseClass), |
| 1830 | {'some_xrepr': XRepr, 'other_a': mod_generics_cache.A, |
| 1831 | 'some_b': mod_generics_cache.B}) |
Ivan Levkivskyi | 43d12a6 | 2018-05-09 02:23:46 +0100 | [diff] [blame] | 1832 | self.assertEqual(gth(XRepr.__new__), |
| 1833 | {'x': int, 'y': int}) |
Ćukasz Langa | f350a26 | 2017-09-14 14:33:00 -0400 | [diff] [blame] | 1834 | self.assertEqual(gth(mod_generics_cache.B), |
| 1835 | {'my_inner_a1': mod_generics_cache.B.A, |
| 1836 | 'my_inner_a2': mod_generics_cache.B.A, |
| 1837 | 'my_outer_a': mod_generics_cache.A}) |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1838 | |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1839 | def test_respect_no_type_check(self): |
| 1840 | @no_type_check |
| 1841 | class NoTpCheck: |
| 1842 | class Inn: |
| 1843 | def __init__(self, x: 'not a type'): ... |
| 1844 | self.assertTrue(NoTpCheck.__no_type_check__) |
| 1845 | self.assertTrue(NoTpCheck.Inn.__init__.__no_type_check__) |
| 1846 | self.assertEqual(gth(ann_module2.NTC.meth), {}) |
| 1847 | class ABase(Generic[T]): |
| 1848 | def meth(x: int): ... |
| 1849 | @no_type_check |
| 1850 | class Der(ABase): ... |
| 1851 | self.assertEqual(gth(ABase.meth), {'x': int}) |
| 1852 | |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1853 | def test_get_type_hints_for_builtins(self): |
Guido van Rossum | 991d14f | 2016-11-09 13:12:51 -0800 | [diff] [blame] | 1854 | # Should not fail for built-in classes and functions. |
| 1855 | self.assertEqual(gth(int), {}) |
| 1856 | self.assertEqual(gth(type), {}) |
| 1857 | self.assertEqual(gth(dir), {}) |
| 1858 | self.assertEqual(gth(len), {}) |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1859 | self.assertEqual(gth(object.__str__), {}) |
| 1860 | self.assertEqual(gth(object().__str__), {}) |
| 1861 | self.assertEqual(gth(str.join), {}) |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1862 | |
| 1863 | def test_previous_behavior(self): |
| 1864 | def testf(x, y): ... |
| 1865 | testf.__annotations__['x'] = 'int' |
| 1866 | self.assertEqual(gth(testf), {'x': int}) |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1867 | def testg(x: None): ... |
| 1868 | self.assertEqual(gth(testg), {'x': type(None)}) |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1869 | |
Guido van Rossum | 991d14f | 2016-11-09 13:12:51 -0800 | [diff] [blame] | 1870 | def test_get_type_hints_for_object_with_annotations(self): |
| 1871 | class A: ... |
| 1872 | class B: ... |
| 1873 | b = B() |
| 1874 | b.__annotations__ = {'x': 'A'} |
| 1875 | self.assertEqual(gth(b, locals()), {'x': A}) |
| 1876 | |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1877 | def test_get_type_hints_ClassVar(self): |
Guido van Rossum | 991d14f | 2016-11-09 13:12:51 -0800 | [diff] [blame] | 1878 | self.assertEqual(gth(ann_module2.CV, ann_module2.__dict__), |
| 1879 | {'var': typing.ClassVar[ann_module2.CV]}) |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1880 | self.assertEqual(gth(B, globals()), |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1881 | {'y': int, 'x': ClassVar[Optional[B]], 'b': int}) |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1882 | self.assertEqual(gth(CSub, globals()), |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 1883 | {'z': ClassVar[CSub], 'y': int, 'b': int, |
| 1884 | 'x': ClassVar[Optional[B]]}) |
Guido van Rossum | 991d14f | 2016-11-09 13:12:51 -0800 | [diff] [blame] | 1885 | self.assertEqual(gth(G), {'lst': ClassVar[List[T]]}) |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 1886 | |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1887 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1888 | class CollectionsAbcTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1889 | |
| 1890 | def test_hashable(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1891 | self.assertIsInstance(42, typing.Hashable) |
| 1892 | self.assertNotIsInstance([], typing.Hashable) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1893 | |
| 1894 | def test_iterable(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1895 | self.assertIsInstance([], typing.Iterable) |
Guido van Rossum | 1b66910 | 2015-09-04 12:15:54 -0700 | [diff] [blame] | 1896 | # Due to ABC caching, the second time takes a separate code |
| 1897 | # path and could fail. So call this a few times. |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1898 | self.assertIsInstance([], typing.Iterable) |
| 1899 | self.assertIsInstance([], typing.Iterable) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1900 | self.assertNotIsInstance(42, typing.Iterable) |
Guido van Rossum | 1b66910 | 2015-09-04 12:15:54 -0700 | [diff] [blame] | 1901 | # Just in case, also test issubclass() a few times. |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1902 | self.assertIsSubclass(list, typing.Iterable) |
| 1903 | self.assertIsSubclass(list, typing.Iterable) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1904 | |
| 1905 | def test_iterator(self): |
| 1906 | it = iter([]) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1907 | self.assertIsInstance(it, typing.Iterator) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1908 | self.assertNotIsInstance(42, typing.Iterator) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1909 | |
Guido van Rossum | ac353df | 2016-10-21 16:12:17 -0700 | [diff] [blame] | 1910 | @skipUnless(ASYNCIO, 'Python 3.5 and multithreading required') |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1911 | def test_awaitable(self): |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 1912 | ns = {} |
| 1913 | exec( |
| 1914 | "async def foo() -> typing.Awaitable[int]:\n" |
| 1915 | " return await AwaitableWrapper(42)\n", |
| 1916 | globals(), ns) |
| 1917 | foo = ns['foo'] |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1918 | g = foo() |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1919 | self.assertIsInstance(g, typing.Awaitable) |
| 1920 | self.assertNotIsInstance(foo, typing.Awaitable) |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1921 | g.send(None) # Run foo() till completion, to avoid warning. |
| 1922 | |
Guido van Rossum | ac353df | 2016-10-21 16:12:17 -0700 | [diff] [blame] | 1923 | @skipUnless(ASYNCIO, 'Python 3.5 and multithreading required') |
Guido van Rossum | 62fe1bb | 2016-10-29 16:05:26 -0700 | [diff] [blame] | 1924 | def test_coroutine(self): |
| 1925 | ns = {} |
| 1926 | exec( |
| 1927 | "async def foo():\n" |
| 1928 | " return\n", |
| 1929 | globals(), ns) |
| 1930 | foo = ns['foo'] |
| 1931 | g = foo() |
| 1932 | self.assertIsInstance(g, typing.Coroutine) |
| 1933 | with self.assertRaises(TypeError): |
| 1934 | isinstance(g, typing.Coroutine[int]) |
| 1935 | self.assertNotIsInstance(foo, typing.Coroutine) |
| 1936 | try: |
| 1937 | g.send(None) |
| 1938 | except StopIteration: |
| 1939 | pass |
| 1940 | |
| 1941 | @skipUnless(ASYNCIO, 'Python 3.5 and multithreading required') |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1942 | def test_async_iterable(self): |
| 1943 | base_it = range(10) # type: Iterator[int] |
| 1944 | it = AsyncIteratorWrapper(base_it) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1945 | self.assertIsInstance(it, typing.AsyncIterable) |
| 1946 | self.assertIsInstance(it, typing.AsyncIterable) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1947 | self.assertNotIsInstance(42, typing.AsyncIterable) |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1948 | |
Guido van Rossum | ac353df | 2016-10-21 16:12:17 -0700 | [diff] [blame] | 1949 | @skipUnless(ASYNCIO, 'Python 3.5 and multithreading required') |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1950 | def test_async_iterator(self): |
| 1951 | base_it = range(10) # type: Iterator[int] |
| 1952 | it = AsyncIteratorWrapper(base_it) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1953 | self.assertIsInstance(it, typing.AsyncIterator) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1954 | self.assertNotIsInstance(42, typing.AsyncIterator) |
Guido van Rossum | f17c200 | 2015-12-03 17:31:24 -0800 | [diff] [blame] | 1955 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1956 | def test_sized(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1957 | self.assertIsInstance([], typing.Sized) |
| 1958 | self.assertNotIsInstance(42, typing.Sized) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1959 | |
| 1960 | def test_container(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1961 | self.assertIsInstance([], typing.Container) |
| 1962 | self.assertNotIsInstance(42, typing.Container) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1963 | |
Guido van Rossum | efa798d | 2016-08-23 11:01:50 -0700 | [diff] [blame] | 1964 | def test_collection(self): |
| 1965 | if hasattr(typing, 'Collection'): |
| 1966 | self.assertIsInstance(tuple(), typing.Collection) |
| 1967 | self.assertIsInstance(frozenset(), typing.Collection) |
| 1968 | self.assertIsSubclass(dict, typing.Collection) |
| 1969 | self.assertNotIsInstance(42, typing.Collection) |
| 1970 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1971 | def test_abstractset(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1972 | self.assertIsInstance(set(), typing.AbstractSet) |
| 1973 | self.assertNotIsInstance(42, typing.AbstractSet) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1974 | |
| 1975 | def test_mutableset(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1976 | self.assertIsInstance(set(), typing.MutableSet) |
| 1977 | self.assertNotIsInstance(frozenset(), typing.MutableSet) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1978 | |
| 1979 | def test_mapping(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1980 | self.assertIsInstance({}, typing.Mapping) |
| 1981 | self.assertNotIsInstance(42, typing.Mapping) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1982 | |
| 1983 | def test_mutablemapping(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1984 | self.assertIsInstance({}, typing.MutableMapping) |
| 1985 | self.assertNotIsInstance(42, typing.MutableMapping) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1986 | |
| 1987 | def test_sequence(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1988 | self.assertIsInstance([], typing.Sequence) |
| 1989 | self.assertNotIsInstance(42, typing.Sequence) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1990 | |
| 1991 | def test_mutablesequence(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1992 | self.assertIsInstance([], typing.MutableSequence) |
| 1993 | self.assertNotIsInstance((), typing.MutableSequence) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1994 | |
| 1995 | def test_bytestring(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 1996 | self.assertIsInstance(b'', typing.ByteString) |
| 1997 | self.assertIsInstance(bytearray(b''), typing.ByteString) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 1998 | |
| 1999 | def test_list(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2000 | self.assertIsSubclass(list, typing.List) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2001 | |
Raymond Hettinger | 8049052 | 2017-01-16 22:42:37 -0800 | [diff] [blame] | 2002 | def test_deque(self): |
| 2003 | self.assertIsSubclass(collections.deque, typing.Deque) |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 2004 | class MyDeque(typing.Deque[int]): ... |
| 2005 | self.assertIsInstance(MyDeque(), collections.deque) |
| 2006 | |
| 2007 | def test_counter(self): |
| 2008 | self.assertIsSubclass(collections.Counter, typing.Counter) |
Raymond Hettinger | 8049052 | 2017-01-16 22:42:37 -0800 | [diff] [blame] | 2009 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2010 | def test_set(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2011 | self.assertIsSubclass(set, typing.Set) |
| 2012 | self.assertNotIsSubclass(frozenset, typing.Set) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2013 | |
| 2014 | def test_frozenset(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2015 | self.assertIsSubclass(frozenset, typing.FrozenSet) |
| 2016 | self.assertNotIsSubclass(set, typing.FrozenSet) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2017 | |
| 2018 | def test_dict(self): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2019 | self.assertIsSubclass(dict, typing.Dict) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2020 | |
| 2021 | def test_no_list_instantiation(self): |
| 2022 | with self.assertRaises(TypeError): |
| 2023 | typing.List() |
| 2024 | with self.assertRaises(TypeError): |
| 2025 | typing.List[T]() |
| 2026 | with self.assertRaises(TypeError): |
| 2027 | typing.List[int]() |
| 2028 | |
Guido van Rossum | 1cea70f | 2016-05-18 08:35:00 -0700 | [diff] [blame] | 2029 | def test_list_subclass(self): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2030 | |
| 2031 | class MyList(typing.List[int]): |
| 2032 | pass |
| 2033 | |
| 2034 | a = MyList() |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2035 | self.assertIsInstance(a, MyList) |
Guido van Rossum | 1cea70f | 2016-05-18 08:35:00 -0700 | [diff] [blame] | 2036 | self.assertIsInstance(a, typing.Sequence) |
| 2037 | |
| 2038 | self.assertIsSubclass(MyList, list) |
| 2039 | self.assertNotIsSubclass(list, MyList) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2040 | |
| 2041 | def test_no_dict_instantiation(self): |
| 2042 | with self.assertRaises(TypeError): |
| 2043 | typing.Dict() |
| 2044 | with self.assertRaises(TypeError): |
| 2045 | typing.Dict[KT, VT]() |
| 2046 | with self.assertRaises(TypeError): |
| 2047 | typing.Dict[str, int]() |
| 2048 | |
Guido van Rossum | 1cea70f | 2016-05-18 08:35:00 -0700 | [diff] [blame] | 2049 | def test_dict_subclass(self): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2050 | |
| 2051 | class MyDict(typing.Dict[str, int]): |
| 2052 | pass |
| 2053 | |
| 2054 | d = MyDict() |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2055 | self.assertIsInstance(d, MyDict) |
Guido van Rossum | 1cea70f | 2016-05-18 08:35:00 -0700 | [diff] [blame] | 2056 | self.assertIsInstance(d, typing.MutableMapping) |
| 2057 | |
| 2058 | self.assertIsSubclass(MyDict, dict) |
| 2059 | self.assertNotIsSubclass(dict, MyDict) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2060 | |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 2061 | def test_defaultdict_instantiation(self): |
| 2062 | self.assertIs(type(typing.DefaultDict()), collections.defaultdict) |
| 2063 | self.assertIs(type(typing.DefaultDict[KT, VT]()), collections.defaultdict) |
| 2064 | self.assertIs(type(typing.DefaultDict[str, int]()), collections.defaultdict) |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 2065 | |
Guido van Rossum | 1cea70f | 2016-05-18 08:35:00 -0700 | [diff] [blame] | 2066 | def test_defaultdict_subclass(self): |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 2067 | |
| 2068 | class MyDefDict(typing.DefaultDict[str, int]): |
| 2069 | pass |
| 2070 | |
| 2071 | dd = MyDefDict() |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2072 | self.assertIsInstance(dd, MyDefDict) |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 2073 | |
Guido van Rossum | 1cea70f | 2016-05-18 08:35:00 -0700 | [diff] [blame] | 2074 | self.assertIsSubclass(MyDefDict, collections.defaultdict) |
| 2075 | self.assertNotIsSubclass(collections.defaultdict, MyDefDict) |
| 2076 | |
Ismo Toijala | 68b56d0 | 2018-12-02 17:53:14 +0200 | [diff] [blame] | 2077 | def test_ordereddict_instantiation(self): |
| 2078 | self.assertIs(type(typing.OrderedDict()), collections.OrderedDict) |
| 2079 | self.assertIs(type(typing.OrderedDict[KT, VT]()), collections.OrderedDict) |
| 2080 | self.assertIs(type(typing.OrderedDict[str, int]()), collections.OrderedDict) |
| 2081 | |
| 2082 | def test_ordereddict_subclass(self): |
| 2083 | |
| 2084 | class MyOrdDict(typing.OrderedDict[str, int]): |
| 2085 | pass |
| 2086 | |
| 2087 | od = MyOrdDict() |
| 2088 | self.assertIsInstance(od, MyOrdDict) |
| 2089 | |
| 2090 | self.assertIsSubclass(MyOrdDict, collections.OrderedDict) |
| 2091 | self.assertNotIsSubclass(collections.OrderedDict, MyOrdDict) |
| 2092 | |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 2093 | @skipUnless(sys.version_info >= (3, 3), 'ChainMap was added in 3.3') |
| 2094 | def test_chainmap_instantiation(self): |
| 2095 | self.assertIs(type(typing.ChainMap()), collections.ChainMap) |
| 2096 | self.assertIs(type(typing.ChainMap[KT, VT]()), collections.ChainMap) |
| 2097 | self.assertIs(type(typing.ChainMap[str, int]()), collections.ChainMap) |
| 2098 | class CM(typing.ChainMap[KT, VT]): ... |
| 2099 | self.assertIs(type(CM[int, str]()), CM) |
| 2100 | |
| 2101 | @skipUnless(sys.version_info >= (3, 3), 'ChainMap was added in 3.3') |
| 2102 | def test_chainmap_subclass(self): |
| 2103 | |
| 2104 | class MyChainMap(typing.ChainMap[str, int]): |
| 2105 | pass |
| 2106 | |
| 2107 | cm = MyChainMap() |
| 2108 | self.assertIsInstance(cm, MyChainMap) |
| 2109 | |
| 2110 | self.assertIsSubclass(MyChainMap, collections.ChainMap) |
| 2111 | self.assertNotIsSubclass(collections.ChainMap, MyChainMap) |
| 2112 | |
| 2113 | def test_deque_instantiation(self): |
| 2114 | self.assertIs(type(typing.Deque()), collections.deque) |
| 2115 | self.assertIs(type(typing.Deque[T]()), collections.deque) |
| 2116 | self.assertIs(type(typing.Deque[int]()), collections.deque) |
| 2117 | class D(typing.Deque[T]): ... |
| 2118 | self.assertIs(type(D[int]()), D) |
| 2119 | |
| 2120 | def test_counter_instantiation(self): |
| 2121 | self.assertIs(type(typing.Counter()), collections.Counter) |
| 2122 | self.assertIs(type(typing.Counter[T]()), collections.Counter) |
| 2123 | self.assertIs(type(typing.Counter[int]()), collections.Counter) |
| 2124 | class C(typing.Counter[T]): ... |
| 2125 | self.assertIs(type(C[int]()), C) |
| 2126 | |
| 2127 | def test_counter_subclass_instantiation(self): |
| 2128 | |
| 2129 | class MyCounter(typing.Counter[int]): |
| 2130 | pass |
| 2131 | |
| 2132 | d = MyCounter() |
| 2133 | self.assertIsInstance(d, MyCounter) |
| 2134 | self.assertIsInstance(d, typing.Counter) |
| 2135 | self.assertIsInstance(d, collections.Counter) |
Raymond Hettinger | 8049052 | 2017-01-16 22:42:37 -0800 | [diff] [blame] | 2136 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2137 | def test_no_set_instantiation(self): |
| 2138 | with self.assertRaises(TypeError): |
| 2139 | typing.Set() |
| 2140 | with self.assertRaises(TypeError): |
| 2141 | typing.Set[T]() |
| 2142 | with self.assertRaises(TypeError): |
| 2143 | typing.Set[int]() |
| 2144 | |
| 2145 | def test_set_subclass_instantiation(self): |
| 2146 | |
| 2147 | class MySet(typing.Set[int]): |
| 2148 | pass |
| 2149 | |
| 2150 | d = MySet() |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2151 | self.assertIsInstance(d, MySet) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2152 | |
| 2153 | def test_no_frozenset_instantiation(self): |
| 2154 | with self.assertRaises(TypeError): |
| 2155 | typing.FrozenSet() |
| 2156 | with self.assertRaises(TypeError): |
| 2157 | typing.FrozenSet[T]() |
| 2158 | with self.assertRaises(TypeError): |
| 2159 | typing.FrozenSet[int]() |
| 2160 | |
| 2161 | def test_frozenset_subclass_instantiation(self): |
| 2162 | |
| 2163 | class MyFrozenSet(typing.FrozenSet[int]): |
| 2164 | pass |
| 2165 | |
| 2166 | d = MyFrozenSet() |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2167 | self.assertIsInstance(d, MyFrozenSet) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2168 | |
| 2169 | def test_no_tuple_instantiation(self): |
| 2170 | with self.assertRaises(TypeError): |
| 2171 | Tuple() |
| 2172 | with self.assertRaises(TypeError): |
| 2173 | Tuple[T]() |
| 2174 | with self.assertRaises(TypeError): |
| 2175 | Tuple[int]() |
| 2176 | |
| 2177 | def test_generator(self): |
| 2178 | def foo(): |
| 2179 | yield 42 |
| 2180 | g = foo() |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2181 | self.assertIsSubclass(type(g), typing.Generator) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2182 | |
| 2183 | def test_no_generator_instantiation(self): |
| 2184 | with self.assertRaises(TypeError): |
| 2185 | typing.Generator() |
| 2186 | with self.assertRaises(TypeError): |
| 2187 | typing.Generator[T, T, T]() |
| 2188 | with self.assertRaises(TypeError): |
| 2189 | typing.Generator[int, int, int]() |
| 2190 | |
Guido van Rossum | e9ed560 | 2017-01-18 13:10:31 -0800 | [diff] [blame] | 2191 | def test_async_generator(self): |
| 2192 | ns = {} |
| 2193 | exec("async def f():\n" |
Guido van Rossum | 95919c0 | 2017-01-22 17:47:20 -0800 | [diff] [blame] | 2194 | " yield 42\n", globals(), ns) |
Guido van Rossum | e9ed560 | 2017-01-18 13:10:31 -0800 | [diff] [blame] | 2195 | g = ns['f']() |
| 2196 | self.assertIsSubclass(type(g), typing.AsyncGenerator) |
| 2197 | |
Guido van Rossum | e9ed560 | 2017-01-18 13:10:31 -0800 | [diff] [blame] | 2198 | def test_no_async_generator_instantiation(self): |
| 2199 | with self.assertRaises(TypeError): |
| 2200 | typing.AsyncGenerator() |
| 2201 | with self.assertRaises(TypeError): |
| 2202 | typing.AsyncGenerator[T, T]() |
| 2203 | with self.assertRaises(TypeError): |
| 2204 | typing.AsyncGenerator[int, int]() |
| 2205 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2206 | def test_subclassing(self): |
| 2207 | |
| 2208 | class MMA(typing.MutableMapping): |
| 2209 | pass |
| 2210 | |
| 2211 | with self.assertRaises(TypeError): # It's abstract |
| 2212 | MMA() |
| 2213 | |
| 2214 | class MMC(MMA): |
Guido van Rossum | b47c9d2 | 2016-10-03 08:40:50 -0700 | [diff] [blame] | 2215 | def __getitem__(self, k): |
| 2216 | return None |
| 2217 | def __setitem__(self, k, v): |
| 2218 | pass |
| 2219 | def __delitem__(self, k): |
| 2220 | pass |
| 2221 | def __iter__(self): |
| 2222 | return iter(()) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2223 | def __len__(self): |
| 2224 | return 0 |
| 2225 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2226 | self.assertEqual(len(MMC()), 0) |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 2227 | assert callable(MMC.update) |
| 2228 | self.assertIsInstance(MMC(), typing.Mapping) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2229 | |
| 2230 | class MMB(typing.MutableMapping[KT, VT]): |
Guido van Rossum | b47c9d2 | 2016-10-03 08:40:50 -0700 | [diff] [blame] | 2231 | def __getitem__(self, k): |
| 2232 | return None |
| 2233 | def __setitem__(self, k, v): |
| 2234 | pass |
| 2235 | def __delitem__(self, k): |
| 2236 | pass |
| 2237 | def __iter__(self): |
| 2238 | return iter(()) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2239 | def __len__(self): |
| 2240 | return 0 |
| 2241 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2242 | self.assertEqual(len(MMB()), 0) |
| 2243 | self.assertEqual(len(MMB[str, str]()), 0) |
| 2244 | self.assertEqual(len(MMB[KT, VT]()), 0) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2245 | |
Guido van Rossum | 1cea70f | 2016-05-18 08:35:00 -0700 | [diff] [blame] | 2246 | self.assertNotIsSubclass(dict, MMA) |
| 2247 | self.assertNotIsSubclass(dict, MMB) |
| 2248 | |
| 2249 | self.assertIsSubclass(MMA, typing.Mapping) |
| 2250 | self.assertIsSubclass(MMB, typing.Mapping) |
| 2251 | self.assertIsSubclass(MMC, typing.Mapping) |
| 2252 | |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 2253 | self.assertIsInstance(MMB[KT, VT](), typing.Mapping) |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2254 | self.assertIsInstance(MMB[KT, VT](), collections.abc.Mapping) |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 2255 | |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2256 | self.assertIsSubclass(MMA, collections.abc.Mapping) |
| 2257 | self.assertIsSubclass(MMB, collections.abc.Mapping) |
| 2258 | self.assertIsSubclass(MMC, collections.abc.Mapping) |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 2259 | |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2260 | with self.assertRaises(TypeError): |
| 2261 | issubclass(MMB[str, str], typing.Mapping) |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 2262 | self.assertIsSubclass(MMC, MMA) |
| 2263 | |
| 2264 | class I(typing.Iterable): ... |
| 2265 | self.assertNotIsSubclass(list, I) |
| 2266 | |
| 2267 | class G(typing.Generator[int, int, int]): ... |
| 2268 | def g(): yield 0 |
| 2269 | self.assertIsSubclass(G, typing.Generator) |
| 2270 | self.assertIsSubclass(G, typing.Iterable) |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2271 | self.assertIsSubclass(G, collections.abc.Generator) |
| 2272 | self.assertIsSubclass(G, collections.abc.Iterable) |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 2273 | self.assertNotIsSubclass(type(g), G) |
| 2274 | |
Guido van Rossum | e9ed560 | 2017-01-18 13:10:31 -0800 | [diff] [blame] | 2275 | def test_subclassing_async_generator(self): |
| 2276 | class G(typing.AsyncGenerator[int, int]): |
| 2277 | def asend(self, value): |
| 2278 | pass |
| 2279 | def athrow(self, typ, val=None, tb=None): |
| 2280 | pass |
| 2281 | |
| 2282 | ns = {} |
| 2283 | exec('async def g(): yield 0', globals(), ns) |
| 2284 | g = ns['g'] |
| 2285 | self.assertIsSubclass(G, typing.AsyncGenerator) |
| 2286 | self.assertIsSubclass(G, typing.AsyncIterable) |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2287 | self.assertIsSubclass(G, collections.abc.AsyncGenerator) |
| 2288 | self.assertIsSubclass(G, collections.abc.AsyncIterable) |
Guido van Rossum | e9ed560 | 2017-01-18 13:10:31 -0800 | [diff] [blame] | 2289 | self.assertNotIsSubclass(type(g), G) |
| 2290 | |
| 2291 | instance = G() |
| 2292 | self.assertIsInstance(instance, typing.AsyncGenerator) |
| 2293 | self.assertIsInstance(instance, typing.AsyncIterable) |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2294 | self.assertIsInstance(instance, collections.abc.AsyncGenerator) |
| 2295 | self.assertIsInstance(instance, collections.abc.AsyncIterable) |
Guido van Rossum | e9ed560 | 2017-01-18 13:10:31 -0800 | [diff] [blame] | 2296 | self.assertNotIsInstance(type(g), G) |
| 2297 | self.assertNotIsInstance(g, G) |
| 2298 | |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 2299 | def test_subclassing_subclasshook(self): |
| 2300 | |
| 2301 | class Base(typing.Iterable): |
| 2302 | @classmethod |
| 2303 | def __subclasshook__(cls, other): |
| 2304 | if other.__name__ == 'Foo': |
| 2305 | return True |
| 2306 | else: |
| 2307 | return False |
| 2308 | |
| 2309 | class C(Base): ... |
| 2310 | class Foo: ... |
| 2311 | class Bar: ... |
| 2312 | self.assertIsSubclass(Foo, Base) |
| 2313 | self.assertIsSubclass(Foo, C) |
| 2314 | self.assertNotIsSubclass(Bar, C) |
| 2315 | |
| 2316 | def test_subclassing_register(self): |
| 2317 | |
| 2318 | class A(typing.Container): ... |
| 2319 | class B(A): ... |
| 2320 | |
| 2321 | class C: ... |
| 2322 | A.register(C) |
| 2323 | self.assertIsSubclass(C, A) |
| 2324 | self.assertNotIsSubclass(C, B) |
| 2325 | |
| 2326 | class D: ... |
| 2327 | B.register(D) |
| 2328 | self.assertIsSubclass(D, A) |
| 2329 | self.assertIsSubclass(D, B) |
| 2330 | |
| 2331 | class M(): ... |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2332 | collections.abc.MutableMapping.register(M) |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 2333 | self.assertIsSubclass(M, typing.Mapping) |
| 2334 | |
| 2335 | def test_collections_as_base(self): |
| 2336 | |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2337 | class M(collections.abc.Mapping): ... |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 2338 | self.assertIsSubclass(M, typing.Mapping) |
| 2339 | self.assertIsSubclass(M, typing.Iterable) |
| 2340 | |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2341 | class S(collections.abc.MutableSequence): ... |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 2342 | self.assertIsSubclass(S, typing.MutableSequence) |
| 2343 | self.assertIsSubclass(S, typing.Iterable) |
| 2344 | |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2345 | class I(collections.abc.Iterable): ... |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 2346 | self.assertIsSubclass(I, typing.Iterable) |
| 2347 | |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2348 | class A(collections.abc.Mapping, metaclass=abc.ABCMeta): ... |
Guido van Rossum | e259267 | 2016-10-08 20:27:22 -0700 | [diff] [blame] | 2349 | class B: ... |
| 2350 | A.register(B) |
| 2351 | self.assertIsSubclass(B, typing.Mapping) |
| 2352 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2353 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2354 | class OtherABCTests(BaseTestCase): |
Guido van Rossum | 6aafbd4 | 2016-04-17 17:52:05 -0700 | [diff] [blame] | 2355 | |
Guido van Rossum | 6aafbd4 | 2016-04-17 17:52:05 -0700 | [diff] [blame] | 2356 | def test_contextmanager(self): |
| 2357 | @contextlib.contextmanager |
| 2358 | def manager(): |
| 2359 | yield 42 |
| 2360 | |
| 2361 | cm = manager() |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2362 | self.assertIsInstance(cm, typing.ContextManager) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2363 | self.assertNotIsInstance(42, typing.ContextManager) |
Guido van Rossum | 6aafbd4 | 2016-04-17 17:52:05 -0700 | [diff] [blame] | 2364 | |
Ivan Levkivskyi | 29fda8d | 2017-06-10 21:57:56 +0200 | [diff] [blame] | 2365 | @skipUnless(ASYNCIO, 'Python 3.5 required') |
| 2366 | def test_async_contextmanager(self): |
| 2367 | class NotACM: |
| 2368 | pass |
| 2369 | self.assertIsInstance(ACM(), typing.AsyncContextManager) |
| 2370 | self.assertNotIsInstance(NotACM(), typing.AsyncContextManager) |
| 2371 | @contextlib.contextmanager |
| 2372 | def manager(): |
| 2373 | yield 42 |
| 2374 | |
| 2375 | cm = manager() |
| 2376 | self.assertNotIsInstance(cm, typing.AsyncContextManager) |
| 2377 | self.assertEqual(typing.AsyncContextManager[int].__args__, (int,)) |
| 2378 | with self.assertRaises(TypeError): |
| 2379 | isinstance(42, typing.AsyncContextManager[int]) |
| 2380 | with self.assertRaises(TypeError): |
| 2381 | typing.AsyncContextManager[int, str] |
| 2382 | |
Guido van Rossum | 6aafbd4 | 2016-04-17 17:52:05 -0700 | [diff] [blame] | 2383 | |
Guido van Rossum | eb9aca3 | 2016-05-24 16:38:22 -0700 | [diff] [blame] | 2384 | class TypeTests(BaseTestCase): |
| 2385 | |
| 2386 | def test_type_basic(self): |
| 2387 | |
| 2388 | class User: pass |
| 2389 | class BasicUser(User): pass |
| 2390 | class ProUser(User): pass |
| 2391 | |
| 2392 | def new_user(user_class: Type[User]) -> User: |
| 2393 | return user_class() |
| 2394 | |
Guido van Rossum | d7adfe1 | 2017-01-22 17:43:53 -0800 | [diff] [blame] | 2395 | new_user(BasicUser) |
Guido van Rossum | eb9aca3 | 2016-05-24 16:38:22 -0700 | [diff] [blame] | 2396 | |
| 2397 | def test_type_typevar(self): |
| 2398 | |
| 2399 | class User: pass |
| 2400 | class BasicUser(User): pass |
| 2401 | class ProUser(User): pass |
| 2402 | |
| 2403 | U = TypeVar('U', bound=User) |
| 2404 | |
| 2405 | def new_user(user_class: Type[U]) -> U: |
| 2406 | return user_class() |
| 2407 | |
Guido van Rossum | d7adfe1 | 2017-01-22 17:43:53 -0800 | [diff] [blame] | 2408 | new_user(BasicUser) |
Guido van Rossum | eb9aca3 | 2016-05-24 16:38:22 -0700 | [diff] [blame] | 2409 | |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 2410 | def test_type_optional(self): |
| 2411 | A = Optional[Type[BaseException]] |
| 2412 | |
| 2413 | def foo(a: A) -> Optional[BaseException]: |
| 2414 | if a is None: |
| 2415 | return None |
| 2416 | else: |
| 2417 | return a() |
| 2418 | |
| 2419 | assert isinstance(foo(KeyboardInterrupt), KeyboardInterrupt) |
| 2420 | assert foo(None) is None |
| 2421 | |
Guido van Rossum | eb9aca3 | 2016-05-24 16:38:22 -0700 | [diff] [blame] | 2422 | |
Guido van Rossum | 91185fe | 2016-06-08 11:19:11 -0700 | [diff] [blame] | 2423 | class NewTypeTests(BaseTestCase): |
| 2424 | |
| 2425 | def test_basic(self): |
| 2426 | UserId = NewType('UserId', int) |
| 2427 | UserName = NewType('UserName', str) |
| 2428 | self.assertIsInstance(UserId(5), int) |
| 2429 | self.assertIsInstance(UserName('Joe'), str) |
| 2430 | self.assertEqual(UserId(5) + 1, 6) |
| 2431 | |
| 2432 | def test_errors(self): |
| 2433 | UserId = NewType('UserId', int) |
| 2434 | UserName = NewType('UserName', str) |
| 2435 | with self.assertRaises(TypeError): |
| 2436 | issubclass(UserId, int) |
| 2437 | with self.assertRaises(TypeError): |
| 2438 | class D(UserName): |
| 2439 | pass |
| 2440 | |
| 2441 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2442 | class NamedTupleTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2443 | |
| 2444 | def test_basics(self): |
| 2445 | Emp = NamedTuple('Emp', [('name', str), ('id', int)]) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2446 | self.assertIsSubclass(Emp, tuple) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2447 | joe = Emp('Joe', 42) |
| 2448 | jim = Emp(name='Jim', id=1) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2449 | self.assertIsInstance(joe, Emp) |
| 2450 | self.assertIsInstance(joe, tuple) |
| 2451 | self.assertEqual(joe.name, 'Joe') |
| 2452 | self.assertEqual(joe.id, 42) |
| 2453 | self.assertEqual(jim.name, 'Jim') |
| 2454 | self.assertEqual(jim.id, 1) |
| 2455 | self.assertEqual(Emp.__name__, 'Emp') |
| 2456 | self.assertEqual(Emp._fields, ('name', 'id')) |
Guido van Rossum | 83ec302 | 2017-01-17 20:43:28 -0800 | [diff] [blame] | 2457 | self.assertEqual(Emp.__annotations__, |
| 2458 | collections.OrderedDict([('name', str), ('id', int)])) |
| 2459 | self.assertIs(Emp._field_types, Emp.__annotations__) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2460 | |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 2461 | def test_namedtuple_pyversion(self): |
| 2462 | if sys.version_info[:2] < (3, 6): |
| 2463 | with self.assertRaises(TypeError): |
| 2464 | NamedTuple('Name', one=int, other=str) |
| 2465 | with self.assertRaises(TypeError): |
| 2466 | class NotYet(NamedTuple): |
| 2467 | whatever = 0 |
| 2468 | |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 2469 | def test_annotation_usage(self): |
| 2470 | tim = CoolEmployee('Tim', 9000) |
| 2471 | self.assertIsInstance(tim, CoolEmployee) |
| 2472 | self.assertIsInstance(tim, tuple) |
| 2473 | self.assertEqual(tim.name, 'Tim') |
| 2474 | self.assertEqual(tim.cool, 9000) |
| 2475 | self.assertEqual(CoolEmployee.__name__, 'CoolEmployee') |
| 2476 | self.assertEqual(CoolEmployee._fields, ('name', 'cool')) |
Guido van Rossum | 83ec302 | 2017-01-17 20:43:28 -0800 | [diff] [blame] | 2477 | self.assertEqual(CoolEmployee.__annotations__, |
| 2478 | collections.OrderedDict(name=str, cool=int)) |
| 2479 | self.assertIs(CoolEmployee._field_types, CoolEmployee.__annotations__) |
Guido van Rossum | 0a6976d | 2016-09-11 15:34:56 -0700 | [diff] [blame] | 2480 | |
Guido van Rossum | 3c268be | 2017-01-18 08:03:50 -0800 | [diff] [blame] | 2481 | def test_annotation_usage_with_default(self): |
| 2482 | jelle = CoolEmployeeWithDefault('Jelle') |
| 2483 | self.assertIsInstance(jelle, CoolEmployeeWithDefault) |
| 2484 | self.assertIsInstance(jelle, tuple) |
| 2485 | self.assertEqual(jelle.name, 'Jelle') |
| 2486 | self.assertEqual(jelle.cool, 0) |
| 2487 | cooler_employee = CoolEmployeeWithDefault('Sjoerd', 1) |
| 2488 | self.assertEqual(cooler_employee.cool, 1) |
| 2489 | |
| 2490 | self.assertEqual(CoolEmployeeWithDefault.__name__, 'CoolEmployeeWithDefault') |
| 2491 | self.assertEqual(CoolEmployeeWithDefault._fields, ('name', 'cool')) |
| 2492 | self.assertEqual(CoolEmployeeWithDefault._field_types, dict(name=str, cool=int)) |
| 2493 | self.assertEqual(CoolEmployeeWithDefault._field_defaults, dict(cool=0)) |
| 2494 | |
| 2495 | with self.assertRaises(TypeError): |
| 2496 | exec(""" |
| 2497 | class NonDefaultAfterDefault(NamedTuple): |
| 2498 | x: int = 3 |
| 2499 | y: int |
| 2500 | """) |
| 2501 | |
Guido van Rossum | 95919c0 | 2017-01-22 17:47:20 -0800 | [diff] [blame] | 2502 | def test_annotation_usage_with_methods(self): |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 2503 | self.assertEqual(XMeth(1).double(), 2) |
| 2504 | self.assertEqual(XMeth(42).x, XMeth(42)[0]) |
| 2505 | self.assertEqual(str(XRepr(42)), '42 -> 1') |
| 2506 | self.assertEqual(XRepr(1, 2) + XRepr(3), 0) |
| 2507 | |
| 2508 | with self.assertRaises(AttributeError): |
| 2509 | exec(""" |
| 2510 | class XMethBad(NamedTuple): |
| 2511 | x: int |
| 2512 | def _fields(self): |
| 2513 | return 'no chance for this' |
| 2514 | """) |
Guido van Rossum | 95919c0 | 2017-01-22 17:47:20 -0800 | [diff] [blame] | 2515 | |
Ivan Levkivskyi | f06e021 | 2017-05-02 19:14:07 +0200 | [diff] [blame] | 2516 | with self.assertRaises(AttributeError): |
| 2517 | exec(""" |
| 2518 | class XMethBad2(NamedTuple): |
| 2519 | x: int |
| 2520 | def _source(self): |
| 2521 | return 'no chance for this as well' |
| 2522 | """) |
| 2523 | |
Guido van Rossum | 2f84144 | 2016-11-15 09:48:06 -0800 | [diff] [blame] | 2524 | def test_namedtuple_keyword_usage(self): |
| 2525 | LocalEmployee = NamedTuple("LocalEmployee", name=str, age=int) |
| 2526 | nick = LocalEmployee('Nick', 25) |
| 2527 | self.assertIsInstance(nick, tuple) |
| 2528 | self.assertEqual(nick.name, 'Nick') |
| 2529 | self.assertEqual(LocalEmployee.__name__, 'LocalEmployee') |
| 2530 | self.assertEqual(LocalEmployee._fields, ('name', 'age')) |
Guido van Rossum | 83ec302 | 2017-01-17 20:43:28 -0800 | [diff] [blame] | 2531 | self.assertEqual(LocalEmployee.__annotations__, dict(name=str, age=int)) |
| 2532 | self.assertIs(LocalEmployee._field_types, LocalEmployee.__annotations__) |
Guido van Rossum | 2f84144 | 2016-11-15 09:48:06 -0800 | [diff] [blame] | 2533 | with self.assertRaises(TypeError): |
| 2534 | NamedTuple('Name', [('x', int)], y=str) |
| 2535 | with self.assertRaises(TypeError): |
| 2536 | NamedTuple('Name', x=1, y='a') |
| 2537 | |
Guido van Rossum | 557d1eb | 2015-11-19 08:16:31 -0800 | [diff] [blame] | 2538 | def test_pickle(self): |
| 2539 | global Emp # pickle wants to reference the class by name |
| 2540 | Emp = NamedTuple('Emp', [('name', str), ('id', int)]) |
| 2541 | jane = Emp('jane', 37) |
Serhiy Storchaka | 6d9e923 | 2015-11-20 18:33:02 +0200 | [diff] [blame] | 2542 | for proto in range(pickle.HIGHEST_PROTOCOL + 1): |
| 2543 | z = pickle.dumps(jane, proto) |
| 2544 | jane2 = pickle.loads(z) |
| 2545 | self.assertEqual(jane2, jane) |
Guido van Rossum | 557d1eb | 2015-11-19 08:16:31 -0800 | [diff] [blame] | 2546 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2547 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2548 | class IOTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2549 | |
| 2550 | def test_io(self): |
| 2551 | |
| 2552 | def stuff(a: IO) -> AnyStr: |
| 2553 | return a.readline() |
| 2554 | |
| 2555 | a = stuff.__annotations__['a'] |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2556 | self.assertEqual(a.__parameters__, (AnyStr,)) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2557 | |
| 2558 | def test_textio(self): |
| 2559 | |
| 2560 | def stuff(a: TextIO) -> str: |
| 2561 | return a.readline() |
| 2562 | |
| 2563 | a = stuff.__annotations__['a'] |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2564 | self.assertEqual(a.__parameters__, ()) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2565 | |
| 2566 | def test_binaryio(self): |
| 2567 | |
| 2568 | def stuff(a: BinaryIO) -> bytes: |
| 2569 | return a.readline() |
| 2570 | |
| 2571 | a = stuff.__annotations__['a'] |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2572 | self.assertEqual(a.__parameters__, ()) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2573 | |
| 2574 | def test_io_submodule(self): |
| 2575 | from typing.io import IO, TextIO, BinaryIO, __all__, __name__ |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2576 | self.assertIs(IO, typing.IO) |
| 2577 | self.assertIs(TextIO, typing.TextIO) |
| 2578 | self.assertIs(BinaryIO, typing.BinaryIO) |
| 2579 | self.assertEqual(set(__all__), set(['IO', 'TextIO', 'BinaryIO'])) |
| 2580 | self.assertEqual(__name__, 'typing.io') |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2581 | |
| 2582 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2583 | class RETests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2584 | # Much of this is really testing _TypeAlias. |
| 2585 | |
| 2586 | def test_basics(self): |
| 2587 | pat = re.compile('[a-z]+', re.I) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2588 | self.assertIsSubclass(pat.__class__, Pattern) |
| 2589 | self.assertIsSubclass(type(pat), Pattern) |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 2590 | self.assertIsInstance(pat, Pattern) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2591 | |
| 2592 | mat = pat.search('12345abcde.....') |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2593 | self.assertIsSubclass(mat.__class__, Match) |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2594 | self.assertIsSubclass(type(mat), Match) |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 2595 | self.assertIsInstance(mat, Match) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2596 | |
Guido van Rossum | 4cefe74 | 2016-09-27 15:20:12 -0700 | [diff] [blame] | 2597 | # these should just work |
Guido van Rossum | d7adfe1 | 2017-01-22 17:43:53 -0800 | [diff] [blame] | 2598 | Pattern[Union[str, bytes]] |
| 2599 | Match[Union[bytes, str]] |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2600 | |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 2601 | def test_alias_equality(self): |
| 2602 | self.assertEqual(Pattern[str], Pattern[str]) |
| 2603 | self.assertNotEqual(Pattern[str], Pattern[bytes]) |
| 2604 | self.assertNotEqual(Pattern[str], Match[str]) |
| 2605 | self.assertNotEqual(Pattern[str], str) |
| 2606 | |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2607 | def test_errors(self): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2608 | m = Match[Union[str, bytes]] |
| 2609 | with self.assertRaises(TypeError): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2610 | m[str] |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 2611 | with self.assertRaises(TypeError): |
| 2612 | # We don't support isinstance(). |
Guido van Rossum | d70fe63 | 2015-08-05 12:11:06 +0200 | [diff] [blame] | 2613 | isinstance(42, Pattern[str]) |
Ivan Levkivskyi | b692dc8 | 2017-02-13 22:50:14 +0100 | [diff] [blame] | 2614 | with self.assertRaises(TypeError): |
| 2615 | # We don't support issubclass(). |
| 2616 | issubclass(Pattern[bytes], Pattern[str]) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2617 | |
| 2618 | def test_repr(self): |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2619 | self.assertEqual(repr(Pattern), 'typing.Pattern') |
| 2620 | self.assertEqual(repr(Pattern[str]), 'typing.Pattern[str]') |
| 2621 | self.assertEqual(repr(Pattern[bytes]), 'typing.Pattern[bytes]') |
| 2622 | self.assertEqual(repr(Match), 'typing.Match') |
| 2623 | self.assertEqual(repr(Match[str]), 'typing.Match[str]') |
| 2624 | self.assertEqual(repr(Match[bytes]), 'typing.Match[bytes]') |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2625 | |
| 2626 | def test_re_submodule(self): |
| 2627 | from typing.re import Match, Pattern, __all__, __name__ |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2628 | self.assertIs(Match, typing.Match) |
| 2629 | self.assertIs(Pattern, typing.Pattern) |
| 2630 | self.assertEqual(set(__all__), set(['Match', 'Pattern'])) |
| 2631 | self.assertEqual(__name__, 'typing.re') |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2632 | |
| 2633 | def test_cannot_subclass(self): |
| 2634 | with self.assertRaises(TypeError) as ex: |
| 2635 | |
| 2636 | class A(typing.Match): |
| 2637 | pass |
| 2638 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2639 | self.assertEqual(str(ex.exception), |
Ivan Levkivskyi | d911e40 | 2018-01-20 11:23:59 +0000 | [diff] [blame] | 2640 | "type 're.Match' is not an acceptable base type") |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2641 | |
| 2642 | |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2643 | class AllTests(BaseTestCase): |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2644 | """Tests for __all__.""" |
| 2645 | |
| 2646 | def test_all(self): |
| 2647 | from typing import __all__ as a |
| 2648 | # Just spot-check the first and last of every category. |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2649 | self.assertIn('AbstractSet', a) |
| 2650 | self.assertIn('ValuesView', a) |
| 2651 | self.assertIn('cast', a) |
| 2652 | self.assertIn('overload', a) |
Guido van Rossum | 6aafbd4 | 2016-04-17 17:52:05 -0700 | [diff] [blame] | 2653 | if hasattr(contextlib, 'AbstractContextManager'): |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2654 | self.assertIn('ContextManager', a) |
Guido van Rossum | bd5b9a0 | 2016-04-05 08:28:52 -0700 | [diff] [blame] | 2655 | # Check that io and re are not exported. |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2656 | self.assertNotIn('io', a) |
| 2657 | self.assertNotIn('re', a) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2658 | # Spot-check that stdlib modules aren't exported. |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2659 | self.assertNotIn('os', a) |
| 2660 | self.assertNotIn('sys', a) |
Guido van Rossum | 6aafbd4 | 2016-04-17 17:52:05 -0700 | [diff] [blame] | 2661 | # Check that Text is defined. |
Zachary Ware | 75b1bdc | 2016-04-19 11:49:37 -0500 | [diff] [blame] | 2662 | self.assertIn('Text', a) |
Ivan Levkivskyi | f06e021 | 2017-05-02 19:14:07 +0200 | [diff] [blame] | 2663 | # Check previously missing classes. |
| 2664 | self.assertIn('SupportsBytes', a) |
| 2665 | self.assertIn('SupportsComplex', a) |
Guido van Rossum | 46dbb7d | 2015-05-22 10:14:11 -0700 | [diff] [blame] | 2666 | |
| 2667 | |
| 2668 | if __name__ == '__main__': |
| 2669 | main() |